A Migraine Typically Afflicts One Side of the Head, Lasts for Hours GMAT Sentence Correction

Question: A migraine typically afflicts one side of the head, lasts for hours or days, and may recur as infrequently as once every other month or often, as daily.

(A) as infrequently as once every other month or often, as
(B) as infrequently as once every other month or as often as
(C) infrequently, as often as once every other month, or often, like
(D) infrequently, like once every other month, or often, like
(E) infrequently, like once every other month, or as often as

“A migraine typically afflicts one side of the head, lasts for hours or days, and may recur as infrequently” - 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: B

Explanation:

The following principles can be used to confirm the modification that is being requested for the phrase:

• Parallelism
• Examining two separate aspects
• Modifiers

This is how the sentence is put together:
A migraine often only affects one side of the brain, lasts for a few hours to a few days, and can recur as infrequently as every two months or as frequently as every day.

The following are some of the things a migraine causes:

1. One side of the head is affected.
2. It lasts for several hours or days.

It might occur again:

1. either occasionally, like once every two months, or frequently, like every day.

Error Analysis:

Three mistakes exist in this sentence:

1. The term "as infrequently as once every other month" used in the comparison is appropriate. The idiom used for the second error, however, is incorrect. The term "frequently as" is used in the sentence, but it needs "as" before it to be complete.
2. This idiomatic error also leads to the parallelism problem. As infrequently as once every other month is not the same as "once as often as."
3. It's inappropriate to use a comma after "frequently." There is no comma in the expression "as X is."

Option A:

The wrong response is option A. For the reasons listed above, it is untrue.

Option B is accurate.

It is best to select Option B. This option omits the comma while also using the appropriate phrase for the second comparison.

Choice C is incorrect.

This is the incorrect choice.

1. As a modifier, "as frequently as" is transformed to "infrequently." Because these two words are mutually exclusive, this choice is irrational.
2. In this selection, the word "like" is misused.

Choice D is incorrect.

This is the wrong decision. The word "like" is misused in this phrase.

Choice E is incorrect.

This is the wrong decision.

1. The word "like" is misused.
2. "rarely," such as "once every other month," is not equivalent to "as regularly as."

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