Choose the answer that uses a parallel structure to complete the sentence.
while researching for his book, the author traveled to europe, conducted studies,
a. and will begin interviewing hundreds of experts.
b. and interviewed hundreds of experts.
c. igor stravinsky, who was a russian composer during the twentieth century, wrote the musical piece the rites of spring; it
is one of the most recorded works of the 1900s and is said to have inspired many of the century's most prominent
composers.

b because it continues the use of past tense "-ed"

the personification of the word prudence d) it effectively enhances the logos and ethos of the argument.

logos means appeal to the logic or reasoning of the people.

ethos means appeal to the credibility of the argument, that it is worth listening to and acting upon.

the sentence does not violate the phrase structure second rule (introduced by noam chomsky) because noun phrases consist of a determiner such as a, the or every, and a noun. in the sentence, the noun phrase the cake includes a determiner (the) and a noun (cake).

on the other hand, the first rule indicates that a sentence encloses a noun phrase, followed by a verb phrase. the example sentence can be analysed as follows:

john (n) + ate (v) + the (det) + cake (n).