Answer:
The lateral surface area of the rectangular pyramid is equal to sum of area of 4 lateral triangles.
Here, the base is square, then 4 lateral triangles have equal area.
=> Lateral surface area of this rectangular pyramid:
A = (area of lateral triangle) x 4
= (12 x 14 x 1/2) x 4 = 336 (ft2)
=> Option C is correct.
Hope this helps!
:)
