The correct answer is D. The dogs were chasing him.
The sentence “He was being chased by the dogs” is in the past progressive tense. This tense is used to describe an action that was happening at a specific time in the past. In this case, the action is “being chased by the dogs.” The dogs were chasing him at a specific time in the past, and the action was ongoing.
The other options are not in the past progressive tense. Option A, “The dogs are chasing him,” is in the present tense. Option B, “The dogs chased him,” is in the simple past tense. Option C, “The dogs chase him,” is in the simple present tense.
The past progressive tense is used to describe an action that was happening at a specific time in the past. In this case, the action is “being chased by the dogs.” The dogs were chasing him at a specific time in the past, and the action was ongoing.