Answer: Loan
Explanation: In simple words, loan refers to lending of money by one entity or a group of entities to some other party. The individual or organisation taking the loan have to repay it in installments in a specified period. The installment repaid is a sum of principal and the interest charged.
In the given case, Lois borrowed money from a bank and is liable to repay that loan within a specified time period.
Hence from the above we can conclude that the correct option is B.