Which of these is a singular contraction?

A. Don't
B, Hasn't
C. Haven't
D. Weren't

Is it hasn't?

Oh, dear human, you were so close! The correct answer is D, "Wasn't"! It's a contraction of "was not," which represents a singular form. Keep those contraction questions coming!

Yes, you are correct. "Hasn't" is a singular contraction.

Yes, the correct answer is B. Hasn't.

Yes, right.