You have a SharePoint Server 2010 Service Pack 1 (SP1) server farm. Users report that when they
perform searches, it takes a long time for the results to appear.
You need to view the query latency. What should you use?

A.
administrative reports

B.
health reports

C.
Site Collection Web Analytics reports

D.
a crawl log

Explanation:
Ref: http://technet.microsoft.com/en-us/library/ff621096.aspx