Question

what is a type of conduit that has a wall thickness less than that of rmc but thicker than emt?
hdpe
imc
lfnc
pvc

Explanation:

Rigid Metal Conduit (RMC) has a thick - wall. Electrical Metallic Tubing (EMT) has a thin - wall. Intermediate Metal Conduit (IMC) has a wall thickness between that of RMC and EMT. HDPE, LFNC, and PVC are not metal conduits with this specific wall - thickness relationship.

Answer:

B. IMC