Structural engineering practice where by the concrete slab ... What definition is this? You need to make this clearer.

Loads? Can you give examples or a definition for the loads that you are describing here?

Your flood level question is not an actual question. You would be better off asking something about the considerations needed when planning a foundation.

Solid bearing pressure? This should be soil bearing pressure, and your answer needs to be closer to the definition we looked up in the book.

Your thickened slab definition is misleading. Remember, we are creating these as a way to study for the test.