Answer
$(d)$
Work Step by Step
We want to take x out of the exponent, and the way to do it is to
apply the power rule, $\log_{a}M^{p}=p\cdot\log_{a}M$,
so we take the logarithm of both sides first.
$\log 5^{x}=\log 3\qquad$ ..choice $(d)$
