Amanda reads the sentence "The girl and the boy shared his ice cream" and realizes that "his" refers to the boy. In this example, Amanda is demonstrating:

syntax, because Amanda uses the rules by which people extract the meaning from words and sentences.

semantics, because Amanda uses the rules by which people extract the meaning from words and sentences.

semantics, because Amanda uses the rules by which words are put together to make phrases and sentences.

syntax, because Amanda uses the rules by which words are put together to make phrases and sentences.