2 cm
4 cm
6 cm
8 cm
Answer is Right!
Answer is Wrong!
The correct answer is C. 6 cm.
A D.P.C. (Damp Proof Course) is a layer of impervious material that is used to prevent the passage of water through a structure. It is typically made of cement concrete, which is a mixture of cement, sand, and gravel. The thickness of the D.P.C. will vary depending on the type of structure and the climate in which it is located. In general, a D.P.C. should be at least 6 cm thick.
Option A is incorrect because 2 cm is too thin for a D.P.C. to be effective. Option B is incorrect because 4 cm is the minimum thickness for a D.P.C. in some cases, but it is not the recommended thickness for all structures. Option D is incorrect because 8 cm is too thick for a D.P.C. in most cases.