In order to prevent the entry of damp into a building, the course are provided are known as the ________ course.
(a) Termites proofing
(b) Water proofing
(c) Corrosion proofing
(d) Damp proofing
I have been asked this question in an international level competition.
My question is taken from Dampness in portion Damp Proofing, Water Proofing and Termite Proofing of Construction & Building Materials