Answer:
The agreement among the Jane and bank personally is the Guaranty
Step-by-step explanation:
As Jane want to take a loan of $50 from bank in order to purchase a building but bank is worried regarding the financial health of the company so in order to grant the loan or mortgage, both bank and Jane entered into an agreement which states that the Jane would be personally liable for the payment if company defaults. So, the agreement in which they agreed is the guaranty given by Jane to bank.