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.
Without people being equal, world wide battles will spread. Hate and cruelness will be inevitable, and perhaps become worse with time, moving through the people who did not expect it to come.
