Question

what does a server do? print documents store and send data display videos block websites

Explanation:

Servers are key in computer - networking. Their main functions include storing and sending data to clients. Printing documents is more related to print - servers which is a specialized type. Displaying videos is mainly a client - side function (though video - servers exist for streaming). Blocking websites is more of a function of firewalls or content - filtering systems. Storing and sending data is a fundamental and broad function of general servers.

Answer:

Store and send data