It has been raining since the morning, _____ prevents me from going to the park.
A. that B. which C. what D. it
It has been raining since the morning, _____ prevents me from going to the park.
A. that B. which C. what D. it
B。句中which引导非限定性定语从句，which指代前面的句子介绍的情况。