Answer: This sentence is a fragment
Explanation: fragments are sentences broken off/ not completed or picked off of a sentence
A. Children who hear learn to communicate naturally, while deaf children must overcome obstacles.
<em><u>Answer:</u></em>
b) The comma attempts to join two independent clauses.
<em><u>Explanation:</u></em>
When two ideas come together and either one of them can stand by itself as its own, independent sentence, then the use of the comma is correct:
Comma + a conjunction (and, but, for, nor, yet, or, so)