I just want to share my train of thought to arrive at E.
I quickly narrowed down to C and E. E seemed right on the money in the first round of filtering, but C shows some elements that are close to what I was looking for, so I kept C. I did so mainly because the part “takes for granted” in C wasn’t intuitive to me. So I had to take a moment to paraphrase it in my head.
I didn’t know that the expression, “take something for granted,” has two meanings. We usually use the expression to say something like, “oh, I’m sorry, I took you for granted”, meaning not appreciating the person. But here in this context, the expression is used to mean assuming something without questioning or assuming something without properly verifying.
Since, in the stem, Beck, the speaker, is not assuming but rather failing to consider that consistency does not mean accuracy, we are left with E.
If Beck assumed that consistency does not mean accuracy, she wouldn’t have said what she said. So the choice C turns out to be a trap, saying something almost what we look for but actually the opposite.