Answer:
The answer would be A.
Explanation:
You would take 9 x 10^5 = 900000 and divide that by 16 to get 56250.
After that, you move the decimal over by 4 to make it a number with only one number above zero in front of the decimal to make 5.625 (negate the 0 bc it does not mean anything after you moved the decimal over)
Since you moved it over by four places, the exponent next to the 10 will be 4, making the final answer 5.625 x 10^4
Good luck and hope this helps!!