Final Answer:
A number that is a multiple of 6 and 8 is D) 42.
Step-by-step explanation:
Numbers that are multiples of both 6 and 8 are those that can be evenly divided by both 6 and 8.
To find such a number, you need to identify the common factors of 6 and 8, which are 2 and 3.
The smallest number that is divisible by both 6 and 8 is the product of these common factors, which is 2 * 3 = 6.
Now, to find the multiples, you multiply this common multiple by integers. In this case, the multiples are 6, 12, 18, 24, 30, 36, 42, and so on.
Among the given options, only 42 is a multiple of both 6 and 8.
In summary, the correct answer is D) 42, as it is a number that is both a multiple of 6 and 8.