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

1. the study of human behaviour.

2. using a secret or exclusive language in certain circumstances

3. Multilingual

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.