Your network contains an enterprise certification authority (CA) that runs Windows Server
2008 R2 Enterprise.
You need to approve a pending certificate request.
Which snap-in should you use?

A.
Active Directory Users and Computers

B.
Authorization Manager

C.
Certification Authority

D.
Group Policy Management

E.
Certificate Templates

F.
TPM Management

G.
Certificates

H.
Enterprise PKI

I.
Security Templates

Explanation:
http://technet.microsoft.com/de-de/library/ff849263.aspx
To issue a pending certificate request:
1. Log on to your root CA by using an account that is a certificate manager.
2. Start the Certification Authority snap-in.
3. In the console tree, expand your root CA, and click Pending Certificates.
4. In the details pane, right-click the pending CA certificate, and click Issue.