a. If a business owner asked to take a loan out from a lender. What measure do lenders typically take to get money back from their lendees?

b. A business owner wants to buy one-third of his company, and wants to use the money from selling this portion of the company to expand his business. As a shareholder, what steps might someone take to make sure he spends his profits and the investment money you gave him wisely?

Any help would be appreciated!