Which position is always staffed in ics applications ?

Incident commander

Explanation:

An Incident commander is in charge of the various parts of an emergencies, which includes developing objectives of the incidents, Managing operations, application of resources as well as take charge of every person involved in the process.

ICS is arranged around 5 functions which are: command, operations, planing, logistics and Administration/Finance and the incident commander has to be staffed because he oversees all these functions.

answer; /// i do believe the correct answer is (possession utility);

answer; no individual buyer or seller has any significant impact on the market price;