Answer: consists of two or more independent organizations that combine requirements for materials, services and capital goods to gain better pricing, service and technology from suppliers.
Step-by-step explanation:
Purchasing consortium is simply defined as an arrangement that involves collaboration which takes place between two or more organisations who join hands together in order to gain better prices and achieve terms which are favorable from their suppliers.
Purchasing consortium consists of two or more independent organizations that combine requirements for materials, services and capital goods to gain better pricing, service and technology from suppliers.
It should be noted that it's not only used by public institutions, therefore option A is incorrect. Purchasing consortium helps speed up the purchasing process.