Question

1. which option combines these sentences to add variety to the paragraph using a complex sentence? \the baby laughed. she played with the colorful blocks.\ the baby laughed and played with the colorful blocks the baby laughed, she played with the colorful blocks the baby, playing with the colorful blocks, laughed while she played with the colorful blocks, the baby laughed.

Explanation:

A complex sentence has one independent clause and at least one dependent clause. "While she played with the colorful blocks" is a dependent clause and "the baby laughed" is an independent clause. The other options are not complex sentences. The first is a simple sentence with a compound verb, the second is a run - on sentence, and the third is a simple sentence with a present participle phrase.

Answer:

While she played with the colorful blocks, the baby laughed.