Fill in the Blank with One of the Words or Phrases

Fill in the blank with one of the words or phrases listed below. $\begin{array} { l l l l } \text { inequality symbols } & \text { exponent } & \text { term } & \text { numerical coefficient } \\\text { grouping symbols } & \text { solution } & \text { like terms } & \text { unlike terms } \\\text { equation } & \text { absolute value } & \text { numerator } & \text { denominator } \\\text { opposites } & \text { base } & \text { reciprocals } & \text { variable }\end{array}$
-A(n) _____of an equation is a value for the variable that makes the equation a true statement.

A) solution
B) denominator
C) base
D) term