Nonhuman vocal systems are often referred to as __________ systems, because they do not combine different calls to produce new meanings.
A) closed
B) absolute
C) limited
D) restricted

Question

Quizplus · Accepted Answer

Nonhuman vocal systems are often referred to as "closed" systems because they do not have the capacity to combine different calls to create new meanings.

Nonhuman Vocal Systems Are Often Referred to as __________ Systems