Which number is an even number from the following options?

• A. 3
• B. 5
• C. 4
• D. 7

Answer: (C)

An even number is defined as an integer that is exactly divisible by two, meaning it has no remainder when divided by two. When we evaluate the numbers presented, we find that 4 can be divided by 2 without leaving a remainder: 4 ÷ 2 equals 2. This solidly categorizes 4 as an even number.

On the other hand, the numbers 3, 5, and 7 do not fit the criteria for even numbers. When 3 is divided by 2, it yields a remainder of 1. The same is true for 5 and 7; both also leave a remainder when divided by 2, confirming that they are odd numbers. Therefore, the identification of 4 as the only even number among the options is correct.