How can composite numbers be defined?

The definition of composite numbers is indeed that they are numbers that have three or more factors. A composite number can be divided evenly by numbers other than one and itself, which essentially means it has at least one additional factor, resulting in a minimum of three total factors. For example, the number 6 is composite because its factors include 1, 2, 3, and 6.

In contrast, the other options do not accurately describe composite numbers. A definition focusing on having only two factors refers to prime numbers, which are the numbers that can only be divided evenly by one and themselves. The option that mentions numbers being divisible by two describes even numbers, which can include both composite and prime numbers. Lastly, the option about not including fractions does not pertain to the definition of composite numbers, as it applies more broadly to the set of all whole numbers and does not capture the essence of what makes a number composite.