Google analytics is an example of which of the followinga) search engine

b. site management tool

c. web browser

d. security services tool

Google Analytics works on statistics. It allows businesses/websites to get an insight into what their customer's needs and wants are.

Out of the answers you've given, I would say it is a site Management Tool.

Cancelling out: (and reasons for cancelling them)

Search Engine - Google on its own is a search engine, however, Analytics is a 'Subsidiary' if you will.

Google Chrome is a Web Browser - Not the sector of Google Analytics.

Security Services - It does not encrypt anything (or make anything safer for users)