If a noun forms the plural simply by adding s or es, the plural form will probably not be shown in the dictionary

What is the cash flow yield of a mortgage pass-through security?

What will be an ideal response?

Joshua recently purchased a new home. His lender required him to purchase credit life insurance on the loan in the event that he died before the mortgage is paid off

What is the loan clause that allows his lender to require him to purchase this additional insurance. A) Insurance agreement clause B) Default contingency clause C) Early payment clause D) Recourse clause E) None of the above