In order to answer this question, we can use the Molarity formula, which is:
M = n/V
Where:
M = molarity, which we already have the value, 0.500 M
n = number of moles, 0.402 moles
V = volume
Now if we add the given values in the formula, we will have:
0.500 = 0.402/V
V = 0.402/0.500
V = 0.804 Liters of volume, letter D