$${\textbf{Step - 1: Defining whole numbers and natural numbers}}$$
$${\text{Whole numbers are all non - negative numbers i}}{\text{.e}}{\text{., all the numbers starting from 0}}{\text{.}}$$
$$\therefore {\text{ Whole numbers = \{ 0, 1, 2, 3, }}....{\text{\} }}$$
$${\text{Natural numbers are all positive numbers i}}{\text{.e}}{\text{., all the numbers starting from 1,}}$$
$$\therefore {\text{ Natural numbers = \{ 1, 2, 3, 4, }}.......{\text{\} }}$$
$${\textbf{Step - 2: Analysing}}$$
$${\text{From above, we can see that set of whole numbers is nothing but set}}$$
$$\text{of natural numbers with a 0,}$$
$$ \Rightarrow {\text{ Natural numbers is a subset of whole numbers}}$$
$$ \Rightarrow {\text{ All whole numbers are not natural numbers}}$$
$${\textbf{No, all whole numbers are not natural numbers}}{\text{.}}$$