In A: it should be "I was" not "I were".
In B: it should be "lately you appear" not "you appears"
in C: this is correct! the subject is in agreement with the verb, and this is the correct answer.
in D: it should be "you are"
"I am not certain," she said hesitantly "if this is a good idea"
In part two of Trifles, the statement that best supports the feminist theme that women often found it difficult to fulfill their own heart’s desires is that (B) the implication that a young Mrs. Peters was discouraged from saving her childhood pet from a vicious little boy.
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Elpenor, Anticlea, and Tiresias