Which sentence has proper parallel structure?
a. the proposal affects three groups: students, parents, and teachers.
b. we posted the notice whereever people meet, on the internet, and in the office.
c. we know who supports us, our opponents, and who has not yet decided.

The correct answer is A. The proposal affects three groups: students, parents, and teachers.

Explanation:

Parallel structure or parallelism occurs when in a sentence different ideas or items follow the same grammatical structure or pattern. This implies the way ideas or items related to other words in the sentence is the same or parallel. Additionally, parallelism makes texts easier to understand as it group words and relate to only one grammatical structure at once. In the case of "The proposal affects three groups: students, parents, and teachers", the first grammatical structure "The proposal affects three groups" is applied to different items "students, parents and teacher" due to this, this sentences follow a proper parallel structure considering the items in the list are related to the same structure and items are put together to express a concise idea.

figurative language is a resource that fiction writers use to make better descriptions of what they want to write about or express. they can improve their stories, as they can elaborate more vivid and colorful sentences. this way, the reader will be able to have more detailed images in his/her mind.

places, objects, people and even feelings or emotions can be described with a lot of detail to metaphors, similes and personifications. making different kinds of comparisons to make a description more specific, as well as assigning human qualities to non-human objects (and vice-versa) can be very useful for science fiction writers.  

on the other hand, alliterations allow writers to elaborate more entertaining and creative sentences. it consists in using a sequence of words that start with the same consonant letter. they can be used to emphasize something important the writer wants to express, or just as a fun literary device.