2. Which conjecture is true?

A. An even number plus 3 is always even.

B. An even number plus 3 is always prime.

C. An even number plus 3 is always odd.

D. A prime number plus 3 is always even

The answer is C. A way to find out is to add a few numbers from that group being specified. If you add 2 or even 100 to 3, the answer will be odd. If you add 12 to 3, you will get 15 which is a composite number. If you were to add 2 to 3, you will get 5 which is an odd number.

C is the correct answer to the question