Fill in the Blanks: Identify a Composite Number Challenge

To solve this problem, we need to identify which of the given numbers is a composite number by analyzing the options provided:

• Option 1: $6$ — The divisors of 6 are 1, 2, 3, and 6. Since it has more than two distinct divisors, it is a composite number.
• Option 2: $2$ — The divisors of 2 are 1 and 2. It has only two distinct divisors, so it is a prime number.
• Option 3: $7$ — The divisors of 7 are 1 and 7. It has only two distinct divisors, so it is a prime number.
• Option 4: $3$ — The divisors of 3 are 1 and 3. It has only two distinct divisors, so it is a prime number.

Based on the list above, we conclude that the number $6$ is a composite number because it has more than two distinct divisors.

Therefore, the correct choice for the composite number is $6$.