Why has the North American Free Trade Agreement (NAFTA) between Canada, the United States, and Mexico resulted in some Mexican farmers
going out of business?
O A. Without tariff protection, they could not compete against lower-
priced U. S. farm products.
B. Without an open border, they could not bring their goods into the
United States to sell.
O C. Without regulation, they could not maintain a clean enough
environment to farm safely.
O D. Without a minimum wage, they could not find workers willing to
work on their farms.

Amath expression is a collection of one or more terms, which are separated by the signs ( + , - , x , / ).example :   8+b8+b  or  a−3a−3in algebra, an equation is a mathematical statement with two expressions where, each expression is separated by an equal (=) sign. variables can be present on both the sides of the equality (=) sign and we use letters to denote such variables.example 1:   x=4+2x=4+2  , [here, we can observe that the variable is present only on one side of the equation].example 2:   2x+3=x+42x+3=x+4  , [here, we can observe that the variables are present on both side of the equation].