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Here is a detailed explanation to this question-
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Human mortality statistics on natural deaths suggest the possibility that the normal human life span comprises an even number of days.
(A) that the normal human life span comprises an even number of days
(B) that an even number of days may be comprising the normal human life span
(C) of the normal human life span to be comprised of an even number of days
(D) of an even number of days that may comprise the normal human life span
(E) of an even number of days to comprise the normal human life span
Meaning is crucial to solving this problem:Understanding the intended meaning is key to solving this question; the intended meaning of this sentence is that human mortality statistics on natural deaths suggest that it is possible that the normal human life span has an even number of days.
Concepts tested here: Meaning + Tenses + Verb Forms + Awkwardness/Redundancy• Information that is permanent in nature is best conveyed through the simple present tense.
• The simple present continuous tense is used to refer to actions that are currently ongoing and continuous in nature.
• The infinitive verb form ("to + base form of verb" - "to + comprise" in this case) is the preferred construction for referring to the purpose/intent of an action.
A: Correct. This answer choice uses the phrase possibility that the normal human life span comprises", conveying the intended meaning - that human mortality statistics on natural deaths suggest that
it is possible that the normal human life span
has an even number of days. Further, Option A correctly uses the simple present tense verb "comprises" to refer to information that is permanent in nature. Additionally, Option A is free of any awkwardness or redundancy.
B: This answer choice incorrectly uses the simple present continuous tense verb "be comprising" to refer to information that is permanent in nature; remember, information that is permanent in nature is best conveyed through the simple present tense, and the simple present continuous tense is used to refer to actions that are currently ongoing and continuous in nature. Further, Option B redundantly uses the word "may" alongside the word "possibility" and uses the passive voice construction "may be comprising", leading to awkwardness and redundancy.
C: This answer choice alters the meaning of the sentence through the phrase "to be comprised"; the construction of this phrase leads to an incoherent meaning; the intended meaning is that human mortality statistics on natural deaths suggest that it is possible that the normal human life span has an even number of days.
D: This answer choice alters the meaning of the sentence through the phrases "possibility of" and "that may comprise"; the construction of these phrases illogically implies that human mortality statistics on natural deaths suggest
the existence of an even number of days that comprise the normal human life span; the intended meaning of this sentence is that human mortality statistics on natural deaths suggest that
it is possible that the normal human life span
has an even number of days. Further, Option D redundantly uses the word "may" alongside the word "possibility" and uses the passive voice construction "may be comprising", leading to awkwardness and redundancy.
E: This answer choice alters the meaning of the sentence through the phrases "possibility of" "to comprise"; the construction of these phrases illogically implies that human mortality statistics on natural deaths suggest
the existence of an even number of days
for the purpose of comprising the normal human life span; the intended meaning of this sentence is that human mortality statistics on natural deaths suggest that
it is possible that the normal human life span
has an even number of days; remember, the infinitive verb form ("to + base form of verb" - "to + comprise" in this case) is the preferred construction for referring to the purpose/intent of an action.
Hence, A is the best answer choice.To understand the concept of "Simple Tenses" on GMAT, you may want to watch the following video (~2 minutes):
To understand the concept of "Simple Continuous Tenses" on GMAT, you may want to watch the following video (~1 minute):
All the best!
Experts' Global Team