You have a SharePoint Server 2010 Service Pack 1 (SP1) server farm. The farm contains the servers
configured as shown in the following table.

You discover that the average CPU utilization on Server3 is 70 percent. You configure a server named
Server4 as a crawl server. You discover that the average CPU utilization on Server3 is still 70 percent.
You need to reduce CPU utilization on Server3. What should you do?

A.
Create a new search scope.

B.
Add the query component to Server4.

C.
Add a new crawl component.

D.
Add a new crawl database.

Explanation:
BURGOS MNEMO: “Add a new crawl component”
You can distribute the crawl load by adding crawl components to different farm servers.
Add or remove a crawl component (Search Server 2010)
http://technet.microsoft.com/en-us/library/ff428094.aspx