Answer:
Cohesiveness
Explanation:
By getting his team to work together and also attend meetings regularly, John is attempting to increase his team's cohesiveness.
This is because all of the activities that John is getting his team involved in is to ensure they work together and get used to each other, be comfortable around each other and understand each other. When all of these aforementioned are imbibed by the team members, the team would have a close bond which in turn will increase the efficiency and productivity of the team.
I hope this helps.