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The additive identity of rational number...

The additive identity of rational numbers is:

A

0

B

1

C

2

D

`-1`

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The correct Answer is:
To solve the question regarding the additive identity of rational numbers, we can follow these steps: ### Step-by-Step Solution: 1. **Understand the Concept of Additive Identity**: - The additive identity is a number that, when added to any other number, does not change the value of that number. 2. **Identify the Additive Identity for Real Numbers**: - For any real number \( a \), the equation \( a + 0 = a \) holds true. This means that adding zero to any real number results in the same number. 3. **Apply the Concept to Rational Numbers**: - Rational numbers are a subset of real numbers. Therefore, the same property applies to rational numbers. If \( r \) is a rational number, then \( r + 0 = r \). 4. **Conclude the Additive Identity**: - Since adding zero to any rational number yields the same rational number, we conclude that the additive identity of rational numbers is \( 0 \). 5. **Final Answer**: - The additive identity of rational numbers is **0**.
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