The best external recruitment source would be temporary agencies.
Explanation:
A temporary agency works on finding and keeping employees. Companies tend to hire this external recruitment source in order to get temporary workers.
In this case, this organization's best option for a short-term labor shortage like this, would be to get help from a temporary agency because it is quicker, it's a temporary filling and there is no time for a screening process.
Once car production was becoming more efficient and cars became more affordable to American families the growth of suburban areas around urban centers increased.
The correct answer is actually industrious or inferior. That's why when they group up there is often a clear hierarchy among the children as to who will be the leader and who will be the follower in things like various games or sports activities.