__________________ is any work involved in fixing or unfixing any pipe, plumbing fixture or appliance including; any trap, waste or soil pipe, ventilation pipe, or overflow pipe and any pipe that supplies or is intended to supply water.
(a) Domestic plumbing
(b) Flooring
(c) Sanitary plumbing
(d) Plastering and putting
This question was posed to me in an online quiz.
My doubt is from Sanitary Works in division Road Estimating, Sanitary and Water Supply Work of Civil Engineering Drawing