Final answer:
The personal pronoun in the sentence is 'his,' with its antecedent being 'Everyone', which is a noun. Parallel structure is exemplified by 'book to read and food to eat'.
Step-by-step explanation:
The sentence provided for analysis is "Everyone brought his own book to read and food to eat." The personal pronoun in this sentence is 'his'. The antecedent of the pronoun 'his' is 'Everyone'. The antecedent is a noun. An example of parallel structure is 'book to read and food to eat,' where similar grammatical structures are used to describe the two different objects that were brought.