Answer:
a. line of credit
Step-by-step explanation:
Line of credit is means of short term financing wherein a borrower can utilize a credit limit upto which he can borrow money.
Line of credit defines the maximum amount a borrower can draw. For e.g a credit card is similar to line of credit
It is a flexible mode of financing since it allows a borrower to draw out as much and as frequently until the credit limit is reached.
Also, it allows the borrower to repay the money immediately or within a specified period of time.