The least non- negative prime integer is

The correct answer is (c).

A prime number is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number.

0 is not a prime number because it is not a natural number. 1 is not a prime number because it is the product of itself and 1. 2 is a prime number because it is not the product of two smaller natural numbers. 3 is a prime number because it is not the product of two smaller natural numbers.