Answer
False, change to
"Every whole number is an integer."
Work Step by Step
The set of integers contains all whole numbers.
The set of natural numbers is { 1, 2, 3, 4, 5, ... } .
The set of whole numbers is { 0, 1, 2, 3, 4, 5, ... }
The set of integers is {... , -4, -3, -2, -1,0, 1, 2, 3, 4,...}
The statement is false.
To make the statement true, change to
"Every whole number is an integer."