Concept:A sole trader increases ownership capital by retaining business profit rather than taking it for personal use.
Explanation:Capital owned is raised from internal sources, not external debts.
Bank loans and credit purchases create liabilities, not extra owner capital.
Debentures are not available to sole traders because they are only issued by limited companies.
When a trader draws less profit for personal needs, the remaining profit is ploughed back into the business.
This reinvestment directly increases the capital owned by the sole trader.
Answer: D. draw less of his profit for personal use.