Which sentence contains an example of correct parallel structure? A) I was nervous, uptight, and was worried. B) The train somet
imes would either go fast, or it would be stopping. C) The only two choices were to operate or to refrain from operating. D) The boys had to choose between playing soccer, playing volleyball, or to swim.
The correct answer is The only two choices were to operate, or to refrain from operating. This is the one choice in which correct parallel structure is showcased.
