Hello!
Scientific notation is a number 1-10 multiplied by [tex] 10^{x} [/tex]. Therefore we need to multiply our number by [tex] 10^{5} [/tex] to get a digit 1-10. Since we multiplied up, our final answer will be ten to a negative exponent to show that the number is smaller than a digit 1-10.
7.52·[tex] 10^{-5} [/tex].
The correct answer is E
I hope this helps!