Final answer:
The bank is trying to solve the problem of adverse selection.
Step-by-step explanation:
The bank is trying to solve the problem of adverse selection. Adverse selection refers to the situation where one party has more information than the other party in a transaction. In this case, the bank wants to ensure that Kabir is a reliable borrower who will repay the loan. By requiring him to leave the house as collateral, the bank reduces the risk of lending to a borrower who may default.