1. Sociolinguistics is most appropriately defined as which of these? The study of human behavior

The scientific study of vocal sounds

The study of animal vocalizations

The scientific study of language usage

2. The linguistic term "code-switching" refers to which of the following?

Using a secret or exclusive language in certain circumstances

The use of jargon within a language

A speaker's use of more than one language, dialect or register in an utterance or interaction

A type of cryptology

3. A person who speaks three languages fluently is most properly referred to by which of these terms?

Magnalingual

Bilingual

Extralingual

Multilingual