Answer:
C he toured the area before and after the dam was built
Answer:
both
Explanation:
example of both: campfire, firefly
Answer:
<em>The sentences </em>A: <em> While she was studying, her dog began to lick her elbow. </em>and<em> </em>D:<em> Without a doubt, she was the fastest in her heat.</em>
Explanation:
The senteces A and D are correct because both begin with a <em>subordinate</em> clause, therefore they have <em>commas</em> to <em>separate them from the main clauses</em>. The sentence B is wrong because it is <em>not necessary</em> the use of the <em>comma</em>, since it started with the main clause. and in the sentence C, the transitional word <em>however</em>, doesn't have another statement to contrast with.
The answer to this answer is B