Each of the Following Statements Is True Except ________

Multiple Choice

Each of the following statements is true except ________.

A) the ability of some primates to use signs to refer to an object is proof of their mastery of human-like language
B) apes can develop vocabularies of hundreds of words using sign language and computer keyboards
C) at best, apes have reached the linguistic levels of a human child around age 2 to 2 ½
D) chimps can learn signs without extensive training or rewards from human trainers