Final Answer:
"Cookies" that websites install are small files with tracking information. They are commonly referred to as web cookies and serve various purposes, including enhancing user experience and providing data for analytics. so correct options is D.
Step-by-step explanation:
"Cookies" installed by websites are small files containing tracking information stored on a user's device. These web cookies play a crucial role in enhancing online user experiences by remembering preferences, login details, and session data. Cookies also serve as data trackers, enabling websites to collect information about users' activities and preferences for analytics and targeted advertising.
While they are fundamental for personalized web experiences, concerns about privacy have led to increased awareness and regulations governing cookie usage. Users can manage cookie settings in web browsers to control the information shared, and websites often request consent for cookie usage to comply with privacy standards. Overall, web cookies are integral to the functioning of modern websites but require a balance between usability and user privacy.