I think he means that humans don’t like being alone. It’s our nature to find someone or have a companion throughout our lives. We instinctfully talk to people to interact or make friends. That’s what I think he means
Relative clauses are types of dependent clauses complete independent sentences - they usually refer to a single word and modify them. Here, in this excerpt, the relative clause would be that we can see in nature. Relative clauses usually begin with pronouns such as who, what, that, etc.
The sentence that avoids clichés, trite phrases, and buzzwords is Our committee will analyze the proposals on Monday.
Explanation:
Clichés, trite phrases, and buzzwords are words or expressions that have been used too many times after they became widely popular, and as a result, they stopped working or giving the impact they used to have, the sentence "Our committee will analyze the proposals on Monday." is simple and direct and does not use any words inside that context.
