a) 1 – 2 m from bed of water body
b) 1 – 2 m from ground surface
c) 1 – 2 cm from bed of water body
d) 1 – 2 cm from ground surface

Answer: b
Explanation: Pit sand is found in Earth in deposits. It is obtained by forming pits in the soil. At a depth of 1 – 2 m from the ground surface, angular grained pit sand is obtained.