Question

Which sentence best defines parallel structure at the sentence level?
Two or more phrases in a sentence are the same length.
Two or more parts of a sentence are connected by a conjunction.
Two or more parts of a sentence have the same grammatical form.
Two or more words in a sentence have the same pattern of syllables.

Answer 1

The sentence which best defines parallel structure at the sentence level is:

Two or more parts of a sentence have the same grammatical form.

In addition, parallelism is a rhetorical device use to convey ideas with equal importance express in similar grammatical form.