The identity element of N. w-r-t "+" is?

Explanation

In the context of the natural numbers (N) and the addition operation (+), there is no identity element with respect to addition. The identity element for addition is an element e such that for any element a, a+e=e+a=a.However, in the set of natural numbers under addition, there is no natural number that, when added to any other natural number, leaves the other number unchanged. The natural numbers start from 1 to infinity, and "0" is not included in this set.