Multiples of 14 are:(a) 7 (b) 1 (c) 28 (d) All of the above?

To solve this question, we need to understand what multiples of 14 are. A multiple of a number is the product of that number and an integer.

Let's consider the multiples of 14:

Multiples of 14 are: 14, 28, 42, 56, 70, 84, and so on.

Now, let's examine each option:

(a) 7 is not a multiple of 14 because 14 × 1 = 14, which is greater than 7. (b) 1 is not a multiple of 14 because no integer multiplied by 14 gives 1. (c) 28 is a multiple of 14 because 14 × 2 = 28. (d) "All of the above" is incorrect because not all the options are multiples of 14.

Therefore, the correct answer is:

(c) 28