Tell which of the following is a sentence fragment: sentence1: the dogs enjoy their bones sentence2: the dogs were enjoying their bones. sentence3 : we saw dogs enjoying their bones.

Sentence 2: The dogs were enjoying their bones.

Explanation:

Sentence fragments are incomplete sentences that were disconnected from the main clause by a period. There is a way to connect them back and is by changing the period with another punctuation as a comma.

The option above is a clear sentence fragment because there is a lack of context about what was happening by the time the dogs were enjoying their bones.

I hope this answer helps you.