Answer:
fill that overlooked role
Explanation:
In a scenario such as this one, the most appropriate action would be to fill that overlooked role. During a resuscitation, every second counts and all the members of a team are trained to handle these situations, therefore if a role has been overlooked by the team leader the other members need to fill that role as quickly as possible as long as they are not currently occupied with another role. Doing so will save time and potentially a life.