Answer:
d
Explanation:
It is d, not aestically pleasing ur teacher should've put 1/sqr root 5^3
why is it d???
because 5^3^-2 is the same as -sqr root (5^3), when the exponent is negative you should bring the value to the denimator
anyways like ur teach did 1/5^3^2 is the same as 1/5^3*2
which is 1/15625