Answer: The plural for studio is A. studios.
Step-by-step explanation: The word "studio" is a noun used to refer to a television or film production company. Rules of word formation state that the plural of words that end in "-o" and that also have a vowel before the final "-o" is formed by only adding an "-s" at the end. In that way, as "studio" ends in -o and has another vowel before it ("i"), its plural is "studios". Therefore, taking into account the rules, "studioes" cannot function as the plural for "studio".