Answer:
The statement is FALSE
Step by Step explanation:
This is a true or false statement. so, basically the given statement:
A key planning principle is that plans are most coherent when developed by a single emergency management professional and then presented to the response community for approval.
The statement is FALSE
Because, A key principle of the plan is that it is adaptive, not only in the knowledge that it contains but also in the ability to update priorities as new issues arise or priorities emerge which means that only developed by a single emergency management professional is not feasible.