What is the definition of the word "base" when the mathematical expression contains an exponent?

A.• The base is the number being multiplied by itself a given number of times.
B• The base is the biggest number in the expression.
C• The base is the number that tells you to square a number.
D• The base is the number that tells you how many times to multiply by itself.

A• The base is the number being multiplied by itself a given number of times.

Are you sure explain

Yes, I am sure. In mathematics, when a mathematical expression contains an exponent, the base refers to the number being raised to a power or multiplied by itself a certain number of times. It is the number that is being multiplied repeatedly or raised to a certain power. For example, in the expression 2^3, the base is 2, as it is being multiplied by itself 3 times. Similarly, in the expression 5^2, the base is 5, as it is being raised to the power of 2. Therefore, option A is the correct definition of the base in this context.