Explanation:
b. data aggregators
Data aggregators are entities that collect and compile data from various sources and then resell or provide access to this aggregated data to other organizations or individuals. They gather data from a wide range of sources, such as websites, public records, social media, sensors, and other data providers.
Here's a breakdown of the explanation:
1. **Collection**: Data aggregators collect data from diverse sources. This can include personal information, consumer behavior data, demographic data, financial data, and more.
2. **Compilation**: Once collected, the data is compiled or aggregated into a centralized database or platform. This process
