When a person visits a Web site, his or her IP address and the links he or she clicked on are automatically recorded. This is an example of (b) invisible information gathering (c) data spillage (a) secondary use (d) data mining

(b) invisible information gathering

Explanation:

Invisible information gathering is the process in which sensitive and personal information about any authorized is collected without their acknowledgement.Example-cookies etc

According to thew question example of invisible information gathering is depicted when links and IP address of the website visitor gets collected automatically without their knowledge.Other options are incorrect because data spillage, data mining and secondary usage is not determined through secret collection of information without knowledge of authorized person.Thus, the correct option is option(B)