A.an analysis of main ideas and supporting evidence
<span>The sentence which does not contain any errors in comma usage is:
A. He can juggle several tennis balls, but he doesn't like tennis.
In this sentence, comma is used to denote a brief pause at the same time separates the dependent and independent clauses for emphasis.</span>
<span>Olympic snowboarders' determination drives them through the rigorous training required to remain competitive in the sport.</span>
