Dogs always chase cats.

Cats are always chasing dogs.
Cats have been always chased by dogs.
Cats are always chased by dogs.
Cats are being always chased by dogs.

The correct answer is: C. Cats are always chased by dogs.

The sentence “Dogs always chase cats” is in the present tense, which means that it is a general statement about how dogs behave. This means that the answer should also be in the present tense. Option A, “Cats are always chasing dogs,” is in the present tense, but it is the opposite of the statement in the question. Option B, “Cats have been always chased by dogs,” is in the past tense, which is not consistent with the present tense of the question. Option D, “Cats are being always chased by dogs,” is also in the present tense, but it is in the passive voice, which is not necessary in this case. Therefore, the correct answer is option C, “Cats are always chased by dogs.”

Here is a brief explanation of each option:

  • Option A, “Cats are always chasing dogs,” is in the present tense, but it is the opposite of the statement in the question. The question states that dogs always chase cats, while option A states that cats always chase dogs.
  • Option B, “Cats have been always chased by dogs,” is in the past tense, which is not consistent with the present tense of the question. The question is about how dogs behave in the present, while option B is about how dogs have behaved in the past.
  • Option C, “Cats are always chased by dogs,” is in the present tense and is consistent with the statement in the question. The question states that dogs always chase cats, and option C states that cats are always chased by dogs.
  • Option D, “Cats are being always chased by dogs,” is also in the present tense, but it is in the passive voice, which is not necessary in this case. The question is about how dogs behave, and the answer can be in the active voice.