Chimpanzees are capable of __________.

A) some propositional thought
B) a fair amount of human phonology
C) the ability to learn complex syntactical rules
D) the ability to refer to things in the past tense

Propositional Thought

The ability to manipulate ideas and concepts in a verbal or symbolic way, often used in logical reasoning.

Syntactical Rules

Guidelines in linguistics that dictate how words and phrases should be arranged to form meaningful sentences.

Past Tense

A grammar term indicating that an action or state occurred in the time before the present.