Question

Parallel structure is the repetition of —

a. words, phrases, or sentences that have the same grammatical structure
b. a theme in several different selections by one author
c. words, phrases, or sentences that have different grammatical structure
d. vowel and consonant sounds in words that are close together

Answer 1

Parallel structure (or parallel construction is its other name) refers to the same grammatical structure in two sentences (or phrases) - so the correct answer is the first one, option a).