What is the chief economic activity in mexico’s gulf coastal plain? a. manufacturing b. oil production c. agriculture d. tourism

I would think that the chief economic activity would be B. oil production but all of the options are big economic activities on the Gulf Coast.

Question -

What is the chief economic activity in Mexico’s Gulf coastal plain?

A. Manufacturing

B. Oil Production

C. Agriculture

D. Tourism

Answer-

B- Oil production

answer; i believe the correct answer is (clockwise and outward) about the center;