Analyze the sentence to choose the correct answer for each space. everyone brought his own book to read and food to eat. identify the personal pronoun, the antecedent of the pronoun, what type of pronoun the antecedent is? & give an example of parallel structure.

Well, there are no personal pronouns in this sentence, so your question must be wrong.
There are two pronouns here: the words everyone and his. Everyone is the antecedent, and it can be classified as an indefinite pronoun. The pronoun his is not a personal pronoun, but rather a possessive one. 
A parallel structure means that the same form of a word is used throughout a sentence, such as in: I like to eat and to drink. - as you can see here, the word like is followed by two infinitives, which makes the sentence a parallel one.

Size and shape of continents

The answer to your question is vagina