Answer:
c. customer relationship management
Step-by-step explanation:
Customer relationship management -
It is the method , to manage the interactions of the present or previous customers with the company , by using the data , is known as the customer relationship manangement .
It make use of all the previous data in order to increase the business realtionship with the cutomers , for better profit .
The CRM , takes help from the website of the compnay , emails , chats and even social media , to perform its task .