Please explain your reasoning. I'm having a hard time understanding the work. Thanks;)

Offer instruments to help institutions that invest in mortgages hedge (protect themselves) against large fluctuations in interest rates. Originate mortgages by working with borrowers to create loans where the real estate or property is used as collateral for the loan. Sell shares and use the proceeds to create portfolios consisting of mortgage-backed securities. Use securitization to pool a variety of mortgages and sell mortgage-backed secunties