Final answer:
The subject of the sentence 'Garry hates going to the movies' is 'Garry.'
Step-by-step explanation:
In English grammar, the subject is the person, place, thing, or idea that is doing or being something.
In this sentence, Garry is the one who feels hatred towards the activity of going to the movies, making him the subject of the sentence.
Therefore, the subject in the sentence "Garry hates going to the movies" is Garry.