. The smallest prime number is
The correct options is B.
We have to find the smallest prime number from the given options.
First one is 1. 1 is an odd number and it has only one factor i.e 1 itself. 1 is not a prime number as well as not a composite number.
Second one is 2. 2 is an even number and 2 have two factors: 1 and 2. As 2 have only two factors, it is a prime number.
Third one is 3. 3 is an odd number and 3 also have two factors: 1 and 3. As 3 also have only two factors, it is also a prime number.
Fourth one is 4. 4 is an even number and 4 have three factors: 1, 2 and 4. As 4 has three factors it is not a prime number. 4 is a composite number.
So, we got two prime numbers, they are 2 and 3. 2 is smaller than 3. Therefore, 2 is the smallest prime number.