Which of the following represents the additive identity? ab = ba a · 1 = a a + b = b + a a + 0 = a

Option D

Answers:  

In the given identities a + 0 = 0 + a will represent the additive identity.

Solution:  

The additive identity says that if you add a real number to zero or add zero to a real number, then you get the same real number back.  This can be written as,

A + 0 = A

The number zero is known as identity element or the additive identity.

Let us understand the additive property using a example:

Let us consider the case 0 + 40 = 40, here 0 represents the identity value.

When we add zero to real number 40, we get the result as 40 which is the same number.

Hence, on the given options, the value a + 0 = a will represent the additive identity.

because they could drop even lower..