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 is D because it should’ve said she instead of her
The metaphor was used as the figurative language in the poem “Mother to Son”. She compared her life to a crystal staircase which has obstacles and unexpected corners that make the journey more difficult.“Mother to Son” poem Well, son, I'll tell you: Life for me ain't been no crystal stair. It's had tacks in it, And splinters, And boards torn up, And places with no carpet on the floor - Bare
