Explanation

An escape constructed with masonry or pitched stones to dispose of surplus water is technically called a 'Bye-wash' or 'Spillway', but in irrigation engineering terminology for tanks/reservoirs, 'Bye-wash' specifically refers to the channel or structure used to carry away excess water. However, looking at standard civil engineering MCQs for irrigation, the specific term for an escape constructed with masonry or pitched stones is often 'Bye-wash'. Let's verify. Actually, in many contexts, a 'Bye-wash' is the general term. But let's check option A vs B. 'Paved-escape' is descriptive but not the standard technical term. 'Bye-wash' is the standard term for an escape channel from a tank/reservoir.