Answer:
D. the exponent can be odd
Explanation:
A. (-4)² = 16 ⇒ -4 is even and the product is positive.
B. (-5)² = 25 ⇒ -5 is odd and the product is positive.
C. (-5)⁴ = 625 ⇒ The exponent 4 is even and the product is positive.
D. (-5)⁵ = -3125 ⇒ The exponent 5 is odd and the product is negative.
So, the answer is D.
Hope this helps.