Question

read this example of incorrect sentence structure.
heavy, black clouds rushing in from the horizon.
which revision corrects the sentence?
○ heavy, black clouds rushing in from the horizon, get under cover.
○ heavy, black clouds rushing in from the horizon. its about to rain.
○ heavy, black clouds rushing in from the horizon when its about to rain.
○ heavy, black clouds rushing in from the horizon mean a storm is coming.

Explanation:

The original phrase is a sentence fragment (lacks a main verb to complete the thought). We need a revision that creates a complete, grammatically correct sentence:

1. The first option is a comma splice error, connecting an incomplete phrase to an independent clause incorrectly.
2. The second option is two separate fragments/phrases without proper connection.
3. The third option creates a dependent clause that does not form a complete sentence.
4. The fourth option adds a main verb ("mean") that turns the fragment into a complete, logical sentence with a clear subject and predicate.

Answer:

Heavy, black clouds rushing in from the horizon mean a storm is coming.