Question: Delivery drones, unlike conventional modes of transport, ship goods without becoming carbon intensive with their ability to run on batteries, efficiently covering short distances; however, their inability to cover long distances may hinder their popularity in transportation industry

1. ship goods without becoming carbon intensive with their ability to run on batteries, efficiently covering
2. ship goods without becoming carbon intensive, running on batteries and thus efficiently cover
3. ship goods without becoming carbon intensive because they run on batteries and thus efficiently cover
4. can ship goods without becoming carbon intensive as they run on batteries to efficiently cover
5. may ship goods without becoming carbon intensive due to running on batteries and thus efficiently covering

“Delivery drones, unlike conventional modes of transport, ship goods” - is a GMAT sentence correction question. These GMAT sentence correction questions include grammatical mistakes in the underlined part of the sentence. The candidates must pick the correct answer choice by logically specifying the grammatical factors related to it. GMAT sentence correction section tests the basic skills of grammar of the candidates. The readers must observe the sentence precisely in order to answer this question. GMAT sentence correction is a part of GMAT verbal.

Answer: C
Explanation: The adjustment that is being asked in the sentence can be determined by applying certain guidelines given below:

• Parallelism
• Verb
• Redundancy/Awkwardness
• Clause
• Meaning
• Causality

The following is the sentence structure:

Delivery drones, unlike conventional modes of transport, ship goods without becoming carbon-intensive. This is because they run on batteries and efficiently cover short distances. However, their incapability to cover long distances may inhibit their popularity in the transportation industry.

Option A: Incorrect
The statement suggests “Delivery drones…, ship goods …with their ability to run on batteries, covering short distances…..” The verb “ship” is not parallel to the verb “covering”. Therefore, it distorts the parallelism of the statement. Moreover, the phrase “with their ability” extends causality. It gives additional information but not an indication of reason or cause. Therefore it leads to awkwardness or redundancy in the statement. Thus, the option is incorrect and hence gets eliminated.

Option B: Incorrect
The statement states “Delivery drones…, ship goods …running on batteries and thus efficiently cover…..” The causality in this statement is not clear. It is required to remember that sequence matters if causality is implicated in the case of a verbing phrase and a clause. If the verbing phrase refers to the cause of occurrence in the clause, then the verbing phrase should not heed the clause. “Comma” and the “verbing” can offer the outcome of that clause. However, in this option, the phrase “running on batteries” does not refer to the outcome of “ship goods without becoming carbon intensive”. Therefore, the option is incorrect as it does not satisfy the rules of grammar.

Option C: Correct
The statement states “...ship goods without becoming carbon intensive because they run on batteries and thus efficiently cover…” In this statement, the casualty is clearly mentioned. The statement clearly satisfies the meaning and logic of the sentence. Therefore, the option is correct as it follows the rules of grammar.

Option D: Incorrect
The statement states “...can ship goods without becoming carbon intensive as they run on batteries to efficiently cover…” The verbs “ship”, “as they run” and “to efficiently cover” are not parallel to each other. It alters the logic and meaning of the sentence. The expression “..as they run on batteries to efficiently cover short distances” states as if the batteries make the efficient coverage of short distances. Therefore, the option is wrong and thereby gets eliminated.

Option E: Incorrect
The statement indicates “...may ship goods without becoming carbon intensive due to running on batteries and thus efficiently covering…” The verbs “may ship”, “due to running” and “covering” distorts the parallelism of the sentence. Further, the phrase “due to” is incorrectly used in the sentence. The phrase “due to” does not demonstrate the reason for the action. It can possibly indicate the drones of “not becoming carbon intensive”. Here the phrase “caused by” should be used instead of “due to”. Therefore, the option is incorrect and hence gets out of scope.

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