Answer:
9
Step-by-step explanation:
To be a composite number, it has to be divisible by something other than 1 and itself.
5, 2, and 11 are all prime numbers, meaning their only factors are 1 and itself.
9 is composite, as it can be multiplied by 1•9 OR 3•3. Since it can be multiplied by something other than 1 and itself (aka the 3 is a factor) is is composite.
