<p>Here it is:</p>
<ol>
<li>Delgado's dilemma was [A: like many other] young writers: he [B:had to choose] between assured publication in a student magazie [C:and] [D: probable rejection by] a popular magazine. [E: No error]</li>
</ol>
<p>I realize now why it is A, but why isn't C a problem?</p>
<p>I put C because instead of "and," "or" seemed appropriate because you can't have it published in both publications, only one...</p>
<p>
You choose between X and Y, where X and Y are options. You pick one or the other, but you choose between both of them, or one and the other. Using “or” instead of “and” would be incorrect.</p>
<p>CORRECT: I have to pick between vanilla and chocolate.
CORRECT: I have to pick between the two things.
CORRECT: I have a choice of vanilla or chocolate.
CORRECT: I have to pick vanilla or chocolate.
INCORRECT: I have to pick between vanilla or chocolate.</p>
<p>^Right, sometimes using “between” with different words helps :)</p>
<p>Thanks, that cleared things up! 
I just have one more question:</p>
<p>So the passage is an autobiography, and this is a question:</p>
<p>In context, which is the best version of “he tells them” in sentence 7 (reproduced below?)</p>
<p>[He tells them, “you are college material…”</p>
<p>I put A, that it is correct. But the actual answer is the same thing, but only in past tense? All my english teachers from honors courses always told me to “refer to literature in present tense,” and even proceeded to take off points for the offenders. Why is it ok and right to use past tense? Is it because it is an autobiography? </p>
<p>Is everything I’ve been told a lie? ;A;</p>
<p>Interesting, I read that same passage while yesterday.</p>
<p>The correct answer choice, D-“He had told them” makes sense because it refers to the specific time (past perfect tense) he told them (before the Delany sisters moved to New York and went to Columbia University).</p>