The fact that your communication professor tells you quite a bit about himself simply by his choice of clothes and classroom demeanor is evidence of the fact that

Explanation:

The fact that your Communication professor tells you quite a bit about himself simply by his choice of clothes and classroom demeanor is evidence of the fact that it is impossible not to communicate. Meaning our choice of cloth and demeanor communicates a lot about ourselves even if we choose to remain silent.

a) it is located in central mexico.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.