The identity for addition for rational numbers is zero which is the option b.
Given addition of rational numbers.
We are required to find the identity for the addition of rational numbers.
Rational numbers are those numbers which can be written in the form of p/q and q cannot be equal to zero because if q is equal to zero the whole fraction will become infinity. The numbers whih cannot be written as p/q are known as irrational numbers.
From the all option zero is the identity for addition for rational numbers. This means if a is a rational number. Then a+0=0+a=a.
Hence the identity for addition for rational numbers is zero which is the option b.
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