Many skaters practice the routine's in cold ice rinks before dawn what is the object of the transitive verb practice

I think the answer is A. Routines

The routines

Explanation:

The object of a transitive verb is referred to as "direct object" and it refers to a noun or pronoun receiving the action (the verb) in a sentence; one way to identify them is by asking the "what?" or the "who?" questions, for example: "What do many skaters practice in cold ice rinks before dawn?" The answer to this question gives us the direct object: "the routines."