It's "computers", because they're the subject of the verb to be.
I think.
D. Mrs. Mallard had loved her husband, but she is happy that she is free.
I think this is accurate, and out of the options it looks like the best choice, but I am not certain.
Answer:
It is not good to cry over the spilt milk.
Answer:
its primary purpose is to entertain its secondary purpose is to inform
Explanation: