There are two main kinds of winter storms involving snow. A large amount of falling snow is called a snowstorm. Then, there is the blizzard. A blizzard is a very violent storm. It features extreme cold, strong winds, and low visibility. What compound-complex sentence can be formed from the underlined section of the passage to add variety to the paragraph? Snowstorms bring a lot of snow; blizzards are violent and they feature extreme cold, strong winds, and low visibility. One is a large amount of falling snow called a snowstorm, and the other is a violent storm with wind, cold, and low visibility called a blizzard. The snowstorm is a large amount of falling snow, but the blizzard is much more violent; it features extreme cold, strong winds, and low visibility. The first is the snowstorm, which brings large amounts of falling snow, and the second is the blizzard, a violent storm that features extreme cold, strong winds, and low visibility.

The compound complex sentence that can be formed from the paragraph is option 4) "The first is the snowstorm, which brings large amounts of falling snow, and the second is the blizzard, a violent storm that features extreme cold, strong winds, and low visibility."

A compound complex sentence is formed by compound sentences and complex sentences. A compound sentence is formed by two independent sentences, and a complex sentence is formed by a dependent or subordinate clause.

In this example, the independent sentences are "The first is the snowstorm" and "the second is the blizzard" and the dependent or subordinate clause is "which brings large amounts of falling snow".

The 1st sentence is not an example of compound complex sentence since it is formed by independent sentences and does not have a dependent clause.

The 2nd sentence doesn't have dependent clauses so it isn't an example of compound complex sentence.

The 3rd sentence includes only independent clauses so it doesn't form a compound complex sentence.

number 4.) or option D