Throw : drop ::
Both throw and drop are ways of releasing an object, one forceful and one gentle, so the pair moves from a stronger action to a milder one in the same family. Catch and hold work the same way on the receiving side: catch is the active seizing of a moving object and hold is the quieter keeping of it.
So Catch : Hold is the answer.
If the price of a commodity increases by 25%, by what percentage should the consumption be reduced to keep the expenditure the same?