You configure a SharePoint Server 2010 Service Pack 1 (SP1) farm. You need to assign administrative
rights to the Search service Application only. What should you do?

A.
Add a service Application administrator at the specific service level.

B.
Configure User1 within the Secure Store Server as an administrator.

C.
Deploy multiple instances of the same service in a farm and assign unique names to the resulting
service Applications,

D.
Add User1 as a Feature Administrator within the particular site collections that require
management by non-farm administrators.

E.
Separate the service Applications throughout the farm.

F.
Assign local administrative rights to User1 to manage the farm environment.

G.
Add User1 explicitly as a Search administrator within the farm.

H.
Create a search scope for each web Application and add User1 to the scope.

I.
Add a new Active Directory group to farm administrators.

Explanation:
If you go to “Search Srv App “or” other app” ==> Administrators. You can select the “user or group”
to grant Admin rights.
An administrator of a Microsoft SharePoint Server 2010 service application can assign additional
administrators to that service application. These users are granted security-trimmed access to the
SharePoint Central
Administration Web site and can manage settings related to the service application. You can
similarly remove administrators from a service application.
http://technet.microsoft.com/en-us/lbrary/ee704546.aspx
Ref: http://www.tcscblog.com/2011/07/28/set-a-service-application-administrator-in-sharepoint-
2010/