Cash flows from operating activities are primarily derived from:

Revenue-generating activities

Cash from operating activities represents the cash generated or used by a company's main revenue-generating activities. It reflects the ability of the company to generate cash from its day-to-day operations, which is critical for maintaining its ongoing business activities and financial health. A positive cash flow from operating activities indicates that the company is generating enough cash internally to support its operations and financial commitments, which is a positive sign of solvency.