Correct option is D
The correct answer is
(d) To rain very heavily. The idiom
"to rain cats and dogs" is a vivid and humorous expression used in English to describe
very heavy or torrential rain. It does not literally mean that animals are falling from the sky, but rather that the rain is so intense and noisy that it feels wild and chaotic, much like a fight between cats and dogs.
Example Sentence: “It was raining cats and dogs last night, so we had to cancel the outdoor event.”