The reason why there is a difference between operating and nonoperating income is (2) primary activities of the reporting entity.
This is income that a company gets from activities that the company does not engage in primarily. For instance, a manufacturing company getting income from investments in a tech firm.
Operating income on the other hand, is income that is acquired from the primary activities of the company in question.
In conclusion, option 2 is correct.
Find out more on nonoperating income at https://brainly.com/question/25906113.