Mark the letter A, B, C, or D on your answer sheet to indicate the un...

Question

A smile can be observed described and reliably...

Mark the letter A, B, C, or D on your answer sheet to indicate the un...

0

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.
A smile can be observed, described, and reliably identify ; it can also be elicited and manipulated under experimental conditions.

smileidentifycan alsoexperimental