In a secured loan, collateral is _____.a.valuable property that the borrower promises to give the lender in the event of default on the loanb.an agreement made in civil court agreeing that the borrower may be arrested in the event of default on the loanc.an agreement signed by a co-borrower promising to pay the loan in the event the primary borrower defaults on the loand.and insurance policy taken out by the lender and paid for by the borrower to cover the lender from loss in the event of default