What is the purpose of the Data Link layer?

What is the purpose of the Data Link layer?

A.
End-to-end connection

B.
Dialog control

C.
Framing

D.
Data syntax

Explanation:
The Data Link layer, in most cases, is the only layer that
understands the environment that the system is working it, whether it be Ethernet,
Token Ring, wireless, or connecting to a WAN link. This layer adds the necessary
headers and trailers to the data, which frames it. Other systems on the same network
using the same technology only understand the specific header and trailer format
used in its technology.