The correct answer is A, himself is a 'reflexive pronoun'. When the subject (in this case, Uncle Tony) refers to the same person, to himself, that means it is a reflexive pronoun, such as: myself, yourself, himself... Demonstrative pronouns are: this, that, these... Indefinite pronouns are: somebody, someone... Personal pronouns are: I, you, he/she/it, we, you, they...
The author provides an inference context clue to help determine the meaning of the word heavy. The phrase “erupting like great beasts” helps the reader infer that the “heavy electronic beats” coming from basements are quite forceful.
