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(C) The number of elements in set $A$ is $n = 5$.The total number of subsets of a set with $n$ elements is given by $2^n$.Therefore,the total number o

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$31$

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(C) The number of elements in set $A$ is $n = 5$.The total number of subsets of a set with $n$ elements is given by $2^n$.Therefore,the total number of subsets of $A$ is $2^5 = 32$.$A$ proper subset is any subset of $A$ except the set $A$ itself.Thus,the number of proper subsets is $2^n - 1$.Substituting $n = 5$,we get $2^5 - 1 = 32 - 1 = 31$.

If $A = \{1, 2, 3, 4, 5\}$,then the number of proper subsets of $A$ is

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