Bunuel
Water vapor will condense itself into a stratus cloud, cirrus cloud, cumulus cloud, stratocumulus cloud, or cumulonimbus cloud, after it cools in the upper atmosphere, depending on its atmospheric saturation.
(A) Water vapor will condense itself into a stratus cloud, cirrus cloud, cumulus cloud, stratocumulus cloud, or cumulonimbus cloud, after it cools in the upper atmosphere, depending on its atmospheric saturation.
(B) After cooling in the upper atmosphere, depending on atmospheric saturation, water vapor will condense itself into a stratus cloud, cirrus cloud, cumulus cloud, stratocumulus cloud, or cumulonimbus cloud.
(C) After cooling in the upper atmosphere, water vapor’s atmospheric saturation will determine if it condenses itself into a stratus cloud, cirrus cloud, cumulus cloud, stratocumulus cloud, or cumulonimbus cloud.
(D) The atmospheric saturation of water vapor, after cooling in the upper atmosphere, will determine whether it condenses itself into a stratus cloud, cirrus cloud, cumulus cloud, stratocumulus cloud, or cumulonimbus cloud.
(E) Atmospheric saturation determines whether water vapor, after cooling in the upper atmosphere, will condense itself into a stratus cloud, cirrus cloud, cumulus cloud, stratocumulus cloud, or cumulonimbus cloud.
Explanation:
Grammatical Construction + Meaning + ModifiersUnderstanding the intended meaning is key to solving this question; the intended meaning of this sentence is that the atmospheric saturation of water vapor determines whether it will condense itself into a stratus cloud, cirrus cloud, cumulus cloud, stratocumulus cloud, or cumulonimbus cloud, after it cools in the upper atmosphere.
• The introduction of present participle ("verb+ing"- “depending” in this case) after comma generally leads to a cause-effect relationship.
• Information that is important to the core meaning should not be placed within two commas.
• In the “phrase + comma + noun” and “noun + comma + phrase” constructions, the phrase must correctly modify the noun; this is one of the most frequently tested concepts on GMAT sentence correction.
A. This answer choice alters the meaning of the sentence through the phrase “depending on its atmospheric saturation”; the use of the “comma + present participle ("verb+ing"- “depending” in this case)” construction incorrectly implies that the water vapor cooling in the upper atmosphere depends on its atmospheric saturation; the intended meaning is that the atmospheric saturation of water vapor determines whether it will condense itself into a stratus cloud, cirrus cloud, cumulus cloud, stratocumulus cloud, or cumulonimbus cloud, after it cools in the upper atmosphere; please remember, the introduction of present participle ("verb+ing"- “depending” in this case) after comma generally leads to a cause-effect relationship.
B. Trap. This answer choice incorrectly place the phrase “depending on atmospheric saturation” that conveys information important to the core meaning of the sentence between two commas; if this information is removed from the sentence, it will not convey the core meaning – that the atmospheric saturation of water vapor determines whether it will condense itself into a stratus cloud, cirrus cloud, cumulus cloud, stratocumulus cloud, or cumulonimbus cloud, after it cools in the upper atmosphere; please remember, information that is important to the core meaning should not be placed within two commas.
C. This answer choice incorrectly uses “After cooling in the upper atmosphere” to modify “water vapor’s atmospheric saturation”, illogically implying that the atmospheric saturation cools in the upper atmosphere; the intended meaning is that the water vapor itself cools in the upper atmosphere; please remember, in the “phrase + comma + noun” and “noun + comma + phrase” constructions, the phrase must correctly modify the noun.
D. This answer choice incorrectly modifies “atmospheric saturation of water vapor” with “after cooling in the upper atmosphere”, illogically implying that the atmospheric saturation cools in the upper atmosphere; the intended meaning is that the water vapor itself cools in the upper atmosphere; please remember, in the “phrase + comma + noun” and “noun + comma + phrase” constructions, the phrase must correctly modify the noun.
E. Correct. This answer choice correctly modifies “water vapor” with “after cooling in the upper atmosphere”, conveying the intended meaning – that the water vapor itself cools in the upper atmosphere. Moreover, Option E uses the clause “Atmospheric saturation…determines whether…will condense… cumulonimbus cloud”, conveying the intended meaning – that the atmospheric saturation of water vapor determines whether it will condense itself into a stratus cloud, cirrus cloud, cumulus cloud, stratocumulus cloud, or cumulonimbus cloud, after it cools in the upper atmosphere. Further, Option E avoids the grammatical construction error seen in Option B, as it places only the phrase “after cooling in the upper atmosphere”, which does not convey information important to the core meaning, between two commas.
E is the best answer choice.