Final Answer:
The social commerce feature that allows social network sites to gather and distribute information about a user's product preferences is E) Newsfeed.
Step-by-step explanation:
Social Commerce Features:
Social commerce integrates social media and e-commerce, leveraging social platforms for buying and selling. Each feature serves a specific purpose in enhancing the shopping experience.
Newsfeed Functionality:
The newsfeed feature allows social network sites to curate and display information about a user's activities, including liked or disliked products. It provides a dynamic stream of updates, creating a personalized experience.
Other Features:
Social sign-on (A) facilitates user logins through social media accounts. Network notification (B) involves alerts about social connections' activities. Social search (C) helps users discover products through social recommendations. Collaborative shopping (D) involves shared shopping experiences.
Option E, Newsfeed, is the feature directly related to gathering and distributing information about a user's product preferences.