This question is missing the options. I've found the complete question online. Since the explanation is the same, I will omit it:
Which sentences use wrung correctly? Choose two options.
A. He wrung as much water out of the towel as he could before hanging it up.
B. When she heard the news, she wrung her hands in frustration.
C. The wrungs of the ladder are so unsturdy that the ladder should not be used.
D. The students liked to balance their feet on the wrungs of the desk chairs.
E. Hard work is required to reach the highest wrungs of success.
Answer:
The two options that use "wrung" correctly are:
A. He wrung as much water out of the towel as he could before hanging it up.
B. When she heard the news, she wrung her hands in frustration.
Step-by-step explanation:
According to the explanation given in the question, letters C, D, and E should use "rung" instead of "wrung", since they talk about the crosspieces of a ladder, the cross support of a chair, and a level of hierarchy, respectively. On the other hand, both A and B use "wrung" correctly, since they are both connected to the idea of twisting - in A, a towel, in B, one's hands.