Answer:
a)change t[1].
Explanation:
The array stores elements in serial order.It keeps an index associated to every element of the array and the indexing start form 0 to size-1.So to access the second element in the array it's index will be 1.So to access the second element we have to write arrayname[1];
In our case the array name is t.
So t[1];
Hence the answer is change t[1];