Which operational feature of an Ether switch disables a port on a point-to-point link if the port doesnot receive traffic while Layer 1 status is up?

Which operational feature of an Ether switch disables a port on a point-to-point link if the port doesnot receive
traffic while Layer 1 status is up?

A.
BackboneFast

B.
UplinkFast

C.
Loop Guard

D.
UDLD aggressive mode

E.
Fast Link Pulse burst

F.
Link Control Word