Answer:
Option A. 392 cm³
Explanation:
Formula to get the volume of a pyramid is

Here l = length of the base
w = width of the base
h = height of the pyramid
From the figure attached
l = w = 14 cm
h = 6 cm
Therefore,

V = 14×14×2 = 392 cm³
Option A. 392 cm³ is the answer.