ICS encourages jurisdictions to use common terminology. Common terminology:

AUses plain English to allow personnel from different agencies to work together.
BIs unique terminology that responders use when managing incidents.
CApplies exclusively to the naming of facilities used by the Command Staff.
DEncourages the use of radio codes to communicate efficiently at incident site.

Verified Answer :

The answer is (a) Uses plain English to allow personnel from different agencies to work together.
ICS or Incident Command System is a systematic tool used for the control, command, and coordination of emergency response. To work together, the ICS allows the use of common terminology and operating procedures.