Answer:
a) operating activity (added to net income)
Step-by-step explanation:
Operating activities are those activities that deals to day to day expenses and revenues i.e. salary expense, advance cash received,etc. Also it records the changes in working capital amounts
Here the receipt on dividend held on stock investment considered to be an operating activity and since it is a cash inflow so the same is to be included in the net income
Therefore option a is correct