Question

Unlike frogs that metamorphose from tadpoles into adults within a one-year period, it takes three to four years for the mountain yellow-legged frog of the Sierra Nevada to reach adulthood, and so they are restricted to deeper bodies of water that do not dry up in summer or freeze solid in winter.(A) it takes three to four years for the mountain yellow-legged frog of the Sierra Nevada to reach adulthood, and so they are(B) it takes the mountain yellow-legged frog of the Sierra Nevada three to four years until it reaches adulthood, and therefore it is(C) in the Sierra Nevada, mountain yellow-legged tree frogs take three to four years to reach adulthood, thus being(D) mountain yellow-legged frogs of the Sierra Nevada take three to four years until they reach adulthood, thus(E) mountain yellow-legged frogs of the Sierra Nevada take three to four years to reach adulthood, and so they are

Answer 1

E

Step-by-step explanation:

While all the options give the same information, this is the grammatically correct answer because their is agreement between the subject and predicate and parallelism.

The subject of the sentence is frogs, and the information that precedes this word is describing the type of frogs. The verb take must also be used in the plural form since the passage is referring to more than one frog.