Question: As generators of electricity, small, relatively inexpensive windmills shaped like eggbeaters have several advantages over large, propeller-shaped windmills: simplicity, reliability of stressed components, efficiency in convening wind energy, and beauty.

A) As generators of electricity, small, relatively inexpensive windmills shaped like eggbeaters have several advantages over large, propeller-shaped windmills:
B) As generators of electricity, several advantages that small, relatively inexpensive windmills shaped like eggbeaters have over large, propeller-shaped windmills include
C) Several advantages that small, relatively inexpensive windmills for generating electricity shaped like eggbeaters have over large, propeller-shaped windmills include
D) Several advantages of small, relatively inexpensive windmills shaped like eggbeaters for generating electricity over large, propeller-shaped windmills include
E) Small, relatively inexpensive windmills for generating electricity shaped like eggbeaters have the following several advantages over large, propeller-shaped windmills:

“As generators of electricity, small, relatively inexpensive windmills shaped like eggbeaters have several advantages ” - is a GMAT sentence correction question. These types of questions contain grammatical errors in the underlined sentence, and we have to choose the correct statement from the options. GMAT sentence correction is part of GMAT verbal.

Answer: A
Explanation: The following arguments could support the suggested change to the sentence:

• Parallelism
• Considering two distinct facts
• Modifiers

This is how the sentence is put together:

Small, reasonably priced windmills in the shape of eggbeaters have a number of advantages over huge, propeller-shaped windmills as electricity generators, including simplicity, reliability of stressed components, efficiency in harnessing wind energy, and aesthetics.

Let’s check the options one by one -

Option A is correct:
A is the correct answer. The juxtaposition of "electrical, small, reasonably inexpensive windmills" is the sole minor flaw in (A). The fact that they are not intended to be a list took a moment for readers to realize.
The use of a colon is perfectly acceptable as long as an independent clause appears to the left of the punctuation mark, which it does.

Option B is incorrect:
Option B is the incorrect choice. The first part of the sentence illogically modifies the closest term, "many benefits," while the remaining portion (highlighted) modifies these benefits.

Choice C is incorrect:
Option C is an incorrect choice. In the GMAT, "for + verb ing" is less desirable than "to + verb," as was previously stated. No alternative contains "to+verb," therefore we may have disregarded this logic as there were no other problems and no better option was available.
Therefore, C is untrue.

Choice D is incorrect:
D is an incorrect choice. "Relatively cheap windmills designed like eggbeaters for generating electricity" is the key issue with this solution. It implies that in order to produce power, windmills are designed to resemble eggbeaters. If they had a different shape, they wouldn't produce energy.

Choice E is incorrect:
This is the incorrect choice. In addition to all the mistakes for Option C & D highlighted. The architecture of this choice is extremely unwieldy.
I focused on the phrase "following various advantages." We have other, superior choices. Therefore, E is untrue.

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