Your network contains one Active Directory forest named adatum.com. The forest contains a single
domain.
The site topology for the forest is shown in the exhibit. (Click the Exhibit button.)
*Exhibit is Missing*
Each site contains one domain controller. Site link bridging is disabled.
You need to ensure that changes made to Site1 replicate to Site5 within one replication cycle.
What should you create?

A.
a site link

B.
a site

C.
a site link bridge

D.
a subnet

Explanation:
By creating a direct site-link between Site1 and Site5 changes made in Site1 can be replicated in one
cycle to Site5. Active Directory Replication
https://technet.microsoft.com/en-us/library/dd277429.aspx