Answer:
Let a/b and c/d represent two rational numbers. This means a, b, c, and d are__INTEGERS__, and b and d are not 0. The product of the numbers is ac/bd, where bd is not 0. Both ac and bd are _INTEGERS___, and bd is not 0. Because ac/bd is the ratio of two_INTEGERS____, the product is a rational number.
Explanation: