The correct answer is: B. Lime
Distemper is a type of paint that is made from a mixture of lime, water, and pigment. It is a very old type of paint that has been used for centuries. Distemper is a very versatile paint and can be used on a variety of surfaces, including walls, ceilings, and wood. It is also a very affordable paint and is a good option for those on a budget.
Lime is a base material for distemper because it is a very absorbent material. This allows the distemper to adhere to the surface well and to provide a good coverage. Lime is also a very alkaline material, which helps to prevent the growth of mold and mildew.
Chalk is another base material that can be used for distemper. However, chalk is not as absorbent as lime and does not provide as good of a coverage. Chalk is also a more acidic material, which can make it more difficult to prevent the growth of mold and mildew.
Lime putty is a mixture of lime and water that has been allowed to cure for several weeks. Lime putty is a more refined material than lime and provides a better coverage. However, lime putty is also more expensive than lime.
Cement wash is a mixture of cement and water. Cement wash is a very strong material and can be used to create a durable finish. However, cement wash is also very difficult to work with and can be very messy.
In conclusion, the base material for distemper is lime. Lime is a very absorbent material that provides a good coverage and helps to prevent the growth of mold and mildew.