Priority is what needs to be done, now. A priority for all of us is staying alive. Otherwise we'd be dead. (Learned something?)
Science is the number one priority in all of Antarctica.
The same as top priority. The number one concern.
Personal safety.
The same as top priority. The number one concern.
France
The number one priority with all food is taste, appearance and smell.
force protection
Yes. Protecting the environment should be made the number one priority because if the environment collapses, nothing else will matter. If there is no fresh water left, taxes and bank accounts won't matter.
To do as little amount of work possible while still getting payed :)
The number one priority for officers arriving at a crime scene is to secure the area and ensure the safety of individuals present. This involves assessing the situation for any potential threats and controlling access to preserve evidence integrity.
Probably his wife, but I can say if she was top priority. His books were his number one love.
No barrier on the list that accompanies the question does that.