Question

Zero is ,

• A. The identity for addition of rational numbers.
• B. The identity for subtraction of rational numbers.
• C. The identity for multiplication of rational numbers.
• D. The identity for division of rational numbers.

Answer 1

The correct option is A

The identity for addition of rational numbers.

Explanation for the correct option.

The rational number $0$ is the additive identity for rational numbers.

If $a$ is a rational number.

Then,

$$\begin{gathered} a+0=0+a \\ =a \end{gathered}$$

Hence, $0$ is an additive identity.

The correct option is $\left(A\right)$.