What compound-complex sentence can be formed from the underlined section of the passage? Learning a language can be a difficult and useful hobby; I’ve tried it. Learning a language can be difficult; it is one of the most useful hobbies I’ve tried. Learning a language can be difficult, it is one of the most useful hobbies I’ve tried. Learning a language can be difficult, yet it is one of the most useful hobbies that I’ve tried.

The compound-complex sentence that can be formed from the underlined section is:

D. Learning a language can be difficult, yet it is one of the most useful hobbies that I’ve tried.

Explanation:

This is the only option that has a compound-complex sentence.

A compound-complex sentence is formed by two independent clauses and a dependent one. Independent clauses have a subject and a predicate and are capable of expressing a complete thought on their own. On the other hand, a dependent or subordinate clause is formed by a subject and a verb and starts with a subordinate conjunction or a relative pronoun. A subordinate clause does not express a full idea on its own.

Let's break the sentence down just to visualize it better:

1. Learning a language can be difficult - independent clause.

2. yet it is one of the most useful hobbies - independent clause. "Yet" is a coordinating conjunction.

3. that I’ve tried - dependent/subordinate clause. "That" is a relative pronoun.

abruptly

adverb clause because it is using arrives