Step 1: Contrast with interest received/paid on core operations:
Unlike day-to-day trading cash flows (operating) or asset purchases/sales (investing), a dividend is not generated by running the business or acquiring assets — it is a distribution of profit to those who financed the company.
Step 2: Confirm against standard treatment:
Under Indian accounting standards, dividend paid by a company is consistently shown as a cash outflow under Financing Activities.
Final Answer:
(C) Financing activity.