Answer:
A is correct option.
Explanation:
Besty is shopping for a new rug.
She finds a square rug that want to purchase for here living room.
Before purchase the rug, She needs to know the side of rug measure.
While she knows the area of rug is A.
If area of square is known we can find side of square by taking square root.
So, She has to use square root function to find the size of rug.
Thus, A is correct option.