The artificial language experiments failed to provide clear ...

[audie]

The artificial language experiments failed to provide clear evidence that most chimps can acquire the _____ aspect of language.
 
  A) referential
  B) symbolic
  C) grammatical
  D) operative

Question 2

The artificial language experiments yielded clear evidence that most chimps can acquire the _____ aspect of language.
 
  A) referential
  B) productive
  C) grammatical
  D) syntactical

[Harbringer]

Answer to Question 1

A

Answer to Question 2

A

[audie]

Thanks for the timely response, appreciate it

[Viet Thy]

Gracias!