The future worth of money that is invested currently can be calcualted through the equation,
F = P x (1 + i)^n
where F is the future worth, P is the present worth, i is the interest, and n is the number of years.
a. F = (5,000)(1 + 0.09)^2 = $5,940.5
b. F = (5,000)(1 + 0.06)^3 = $5,955.08
c. F = (5,000)(1 + 0.03)^6 = $5,970.26
Hence, the answer to this item is letter C.