Answer: (4) Service and information
Explanation:
According to the question, the site is providing the services and the information utilities to the users as the service utility maintain and also update the information the site database for the public access.
The information is one of the central database of the site where the users can get all the searched information about the specific site.
The vendor of the knot website manage all the services and the information and if the users that is couple are get married once then they are the users data to the another company.
Therefore, Option (4) is correct.