Select the sentence that is completely correct. a. Delivery companies are hunting for cheaper, cleaner replacements for the old smoke, belching diesels. b. Delivery companys are hunting for cheaper cleaner replacements for the old smoke belching diesels. c. Delivery companies are hunting for cheaper, cleaner replacements for the old smoke-belching diesels.

c. Delivery companies are hunting for cheaper, cleaner replacements for the old smoke-belching diesels.

Explanation:

In each of the options, the part in bold type is the wrong part.

a. Delivery companies are hunting for cheaper, cleaner replacements for the old smoke, belching diesels.

smoke-belching is a word

b. Delivery companys are hunting for cheaper cleaner replacements for the old smoke belching diesels.

The plural of Company is Companies not Companys