1. X^9/X^2

A. X^11
B. X^7
C. 7
D. X^5

To simplify the expression (X^9)/(X^2), you can use the rule of exponents which states that when dividing two variables with the same base, you subtract the exponents.

In this case, X is the base, and the exponents are 9 and 2. By subtracting the exponents, you get 9 - 2 = 7.

Therefore, the simplified expression is X^7.

So, the answer is B. X^7.