Principle #$4$ relates to looking for short$-$term, "low$-$hanging fruit"$/"$quick wins". Based on the information given and reasonable inferences in the Rest Well Ldoges simulation, which of the following are clear examples of "low$-$hanging fruit":

Fixing the problem of too few waiters working on weekends in the retaurant $($see Item #$5)$

Educating Paolo on the financial side of running the Hotel

Signing up for extramile.com

Getting better at serving business customers