Answer:
Mechanics, each one singing his as it should be, blithe and strong
•Young fellows, robust, friendly
Explanation:
Parallelism occurs when balance is given to phrases within a sentence that have the same structure.
An adjective is a part of speech that is used to describe a noun or a pronoun in a sentence.
Therefore, the texts in the passage from "I Hear America Singing" by Walt Whitman that uses adjectives to enhance the effects of parallelism are "Mechanics, each one singing his as it should be, blithe and strong
•Young fellows, robust, friendly"
When you talk to or about someone in a mocking tone, you're making fun of them in a nasty, mean way. But if you're a comedy writer or political satirist, a mocking attitude is a tool of your trade.