Answer:
a. collaborative filtering is the correct answer.
Step-by-step explanation:
- Collaborative filtering is a technique that filters the data from the user surveys to generate a customized proposal for users with related purchasing intentions, choices, and responses from the experience and then project future marketing.
- collaborative filtering has been used in several kinds of data such as monitoring data, financial data, sensing data, web applications, mineral exploration where the main focus is on the customer data.
- Many websites such as Netflix, amazon use collaborative filtering.