Correct answer is option C - Financing activities

Financing activities include the activities that affect the long-term funds or capital of the enterprise. Cash proceeds from the issue of shares or similar other instruments will be classified under financing activities.

Reason for not choosing the other options :

Operating activities: This heading includes cash flows from the main proceeds of activities such as sale and purchase of an entity.

Investing activities: This heading include the cash in-flows and out-flows of an entity that are used to generate revenue.