Answer: Third option: Mixing as many forms of words and word endings as possible.
Explanation:
The question asks us about what is NOT a feature of parallel structures.
Parallel structures ARE used to create consistency in a series of words and phrases. They ARE used to express more than just one idea in a single sentence. They MAKE thoughts more interesting and easy to understand. What parallel structures do NOT do is mix as many forms of words and word endings as possible.
Parallelism consists of the repetition of a certain grammatical structure inside a sentence. The purpose of such repetition is to avoid confusion, making the speech clear, interesting, and easy to be understood. Let's compare the following examples:
1. I love watching TV, video games, and to read magazines.
2. I love watching TV, playing video games, and reading magazines.
The first structure does no present parallelism. Instead, the words completing the meaning of the verb "love " are a mix of grammatical forms. Even though this structure is understandable, it demands more from the reader/listener, since there is no pattern to make it easier to understand the meaning.
The second structure is a parallel one, and the words present similar grammatical forms (verb+ing). A pattern is created, making it simpler and more consistent.
