Answer:D is your answerStep-by-step explanation:What you do to figure this out is you take the 3^15 and make it to where there is 15 3's.3, 3, 3, 3, 3, 3, 3, 3, 3 ,3, 3, 3 ,3, 3, 3. You will then put them in groups of 2 to get them out of the Square root. 3,3 3,3 3,3 3,3 3,3 3,3 3,3 3. There are 7 groups where the 3 can come out of the Square root. So your answer is 3^7sqrt3. D is your answer.