How many entries in that truth table would contain an answer value of 1?
Since the gate is an AND gate (where the output is 1 only when all inputs are 1, and 0 when any input is 0), and since only one row in the truth table has all input values equal to 1, only one of the 32 possible outputs will be 1. This will be true for any AND gate, no matter how many inputs it has: the output will be 1 if all inputs are 1 and 0 otherwise. If I asked the question about OR gates instead of AND gates, the analysis would be similar: OR gates output a 1 if any input is 1 and output 0 only if all inputs are 0. For a 5 input OR gate, one output will be 0 and 31 outputs will be 1.
