Final answer:
A blanket loan is a type of loan arrangement where a developer receives a loan that covers multiple parcels of real estate and provides for the release of the mortgage lien on each parcel when certain payments are made.
Step-by-step explanation:
The type of loan arrangement described, where a developer receives a loan that covers multiple parcels of real estate and provides for the release of the mortgage lien on each parcel when certain payments are made, is called a blanket loan.