Question

What was the primary purpose of NAFTA?

Answer 1

Simple.....

First off what does NAFTA even mean? 
---->>

North American Free Trade Agreement 

Withing this Agreement is Canada, Mexico, and the United States.

B is out of the question...along with C.

The purpose of NAFTA was to eliminate taxes within all products shipped through Canada all the way down to Mexico.

This being said...the purpose of NAFTA was to facilitate the cross-border movement of goods and services.

Thus, your answer.