Hello.. I hope you can help me solve this question. Subject, (dam engineering)

Q2: Chose the correct answer among the multi-choices: 1. The information about water tightness of reservoir basin could be collected from: a) Reservoir Site Investigations b) Soil Investigations c) Geological Investigations d) Hydrological Investigations 2. The curve which represents the cumulative flow in a reservoir at any particular instance is called: a) Demand Curve b) Ripple Curve c) Sequent Peak Curve 3. The method of flood routing that the flow is calculated as a function of time alone at a particular location is denoted by: a) Distributed Method b) Muskingum Method c) Lumped Method 4. In very long channels, the entire flood wave also travels a considerable distance and the centroid of its hydrograph may then be shifted by a time period longer than the time of redistribution this additional time may be as: a) Time of translation b) Time of redistribution c) Time of flood movement 5. In flood routing , a variable storage outflow relationship applies to long, narrow reservoirs, and to open channel or stream, where the water surface profile may be significantly curved due to backwater effects is called: a) Invariable relationship b) Variable relationship c) Planmetering topographic maps