Which number is a result of multiplying the smallest prime number by itself?

The smallest prime number is 2. Prime numbers are defined as natural numbers greater than 1 that have no positive divisors other than 1 and themselves. When you multiply the smallest prime number, 2, by itself (2 x 2), the result is 4. This is why 4 is the correct answer. It is the only value that accurately reflects the operation performed on the smallest prime number. All other options do not result from this particular multiplication and instead represent different values that do not pertain to the question asked.