Fire extinguishers should be inspected:

A) Annually

B) Bi-Annually

C) Monthly

D) Daily

You have to check monthly to insure that the extinguishers is in good working order. If not then replace it.

It all depends on which type of inspection they are talking about.

- A visual inspection is recommended Monthly.

- A maintenance inspection is recommended Annually.

So, if I was the one who had this question, I would put C) Monthly. As monthly checks are recommended by many websites that I saw.