Select the correct answer from each drop-down menu. Complete the sentences with the correct punctuation.

Natasha was especially interested in dinosaurs; however, Jorge wanted to check out the huge collection of precious gems. Natasha gazed into a replica of a cooking fire and began to imagine a crying baby, the persistent click of stone on stone involved in making scraping tools, and the thunderous cry of a mastodon.

Choices:

sounds:
sounds,
sounds;

B). sounds:

Explanation:

The correct punctuation mark with the word 'sound' would be a colon(:) to fill the given sentence correctly. A colon(:) is primarily employed to introduce a list of items, an explanation, an example, or a quotation. Since the word 'sound' introduces the list of different sounds(of a crying baby...the thunderous cry of a mastodon), a colon would be appropriate and grammatically correct to be used. In the previous sentence, 'dinosaurs' follows a 'semicolon' to mark the pause between the two main clauses. Thus, option B is the correct answer.