Question: Sensing danger, physical combat or escape are the situations that the human body readies itself for, and it is as effective as a sophisticated security system is.

1. physical combat or escape are the situations that the human body readies itself for, and it is as effective as a sophisticated security system is
2. the human body readies itself for a physical combat or escape situation, and is as effective as a sophisticated security system
3. the human body readies itself for a physical combat or escape situation, and is as effective as a sophisticated security system is
4. the human body readies itself for a physical combat or escape situation, and is as effective than a sophisticated security system is
5. situations of physical combat or escape are what the human body readies itself for, and it is as effective as a sophisticated security system is

Correct Answer: C
Explanation: the human body readies itself for a physical combat or escape situation, and is as effective as a sophisticated security system is. Correct. This answer choice corrects the original modifier mistake by placing the noun being described directly after the modifier. Let us examine the other options.

Option A
physical combat or escape are the situations that the human body readies itself for, and it is as effective as a sophisticated security system is. Incorrect.
This sentence begins with a modifier. A modifier should be placed right next to the noun it describes. The only noun that this modifier can logically modify is the human body. However, what immediately follows the modifier is physical combat and physical combat cannot sense danger.

Option B
the human body readies itself for a physical combat or escape situation, and is as effective as a sophisticated security system. Incorrect.
Although this answer choice corrects the original Modifier mistake by placing the noun being described (human body) directly after the modifier (Sensing danger). It is stylistically flawed as it omits the verb from the second half of the Comparative structure.

Option D
the human body readies itself for a physical combat or escape situation, and is as effective than a sophisticated security system is- Incorrect. It is illogical and grammatically incorrect. As cannot be complemented by than because as indicates a similarity or equality between the two things compared whereas than indicates a difference between them.

Option E
situations of physical combat or escape are what the human body readies itself for, and it is as effective as a sophisticated security system is- Incorrect.
This answer choice repeats the original Dangling Modifier error. The sentence begins with a modifier: Sensing danger. A modifier should be placed right next to the noun it describes. The only noun that this modifier can logically modify is the human body. However, what immediately follows the modifier is situations and situations cannot sense danger.

“Sensing danger, physical combat or escape are the situations that the”- is a GMAT sentence correction question. These sorts of questions come up with grammatical errors in the underlined part of the sentence. The candidates need to select the correct statement given in the options. The GMAT sentence correction section demands good skills in grammar since the candidate has to identify common grammatical errors. GMAT sentence correction is a part of GMAT verbal.

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