Final answer:
The expression (-5)^3 equals -125 because when a negative number is raised to an odd power, the result is negative. Multiplying -5 by itself three times confirms this result.
Step-by-step explanation:
The value of the expression (-5)^3 is calculated by multiplying -5 by itself three times. Since we are raising a negative number to an odd power, the result will also be negative. Multiplying -5 × -5 gives us 25, and multiplying this result by -5 once more gives us -125.
So, the expression (-5)^3 is equal to -125, which corresponds to answer choice A.