Which of the following is NOT a main source of business finance?

Government grants are indeed a form of finance that businesses can access, but they are often considered less conventional compared to the other options listed. The primary sources of business finance typically include bank loans, which provide businesses with borrowing options that need to be repaid with interest; crowdfunding, which allows businesses to raise small amounts of money from a large number of people, usually via online platforms; and venture capital, where investors provide capital to startups and small businesses that they believe have long-term growth potential in exchange for equity in the company.

While government grants can provide significant support, especially for startups and innovation-focused projects, they are often specific to particular initiatives or regions and may not be universally accessible for all businesses. Thus, this makes them less of a primary or mainstream source of finance in comparison to the others mentioned.