(i) True, ( Consider the whole numbers and natural numbers separately. We know that whole number series is 0,1, 2, 3, 4,5..... .
We know that natural number series is1, 2, 3, 4,5..... .
So, we can conclude that every number of the natural number series lie in the whole number series.
Therefore, we conclude that, yes every natural number is a whole number.