Why do foregin companies build plants in mexico

I have a question for the question you just asked.
Now, is this a opinion answer or is it supposed to have a one true answer?

Edit

Cheap production and labor costs, tax incentives and a relatively good transportation infrastructure into the end market (the United States) are the main factors.

A,) cause a & b are equal & both gives 180°

Answer. first blank ; ; ; clockwise; the second blank; ///clockwise;