________ is the main source causing dampness in badly designed kitchens.
(a) Action of rain
(b) Condensation
(c) Exposed tops of walls
(d) Miscellaneous causes
This question was posed to me during an online exam.
I'd like to ask this question from Dampness in division Damp Proofing, Water Proofing and Termite Proofing of Construction & Building Materials