Fill in the blank with the most appropriate word.Did the company test the equipment yesterday? Yes it ____.

Answer: Option D

In this sentence, we are responding to a past action that occurred yesterday. The question is framed in the past simple tense ("Did the company test the equipment yesterday?"). The correct response should also be in the past simple tense to maintain tense consistency.
The correct sentence should be: "Yes, it was tested." This usage appropriately indicates that the equipment underwent testing in the past, aligning with the tense of the question.