What should graphic designers do to get effective results? Graphic designers must have the ability to
teams and tasks to get the most efficient result?

If you don't tell designers what you want, you won't get it!

Be clear about your ideas and goals, include as much detail as possible. ...

Share as much as you can about your business, your product or campaign and your target audience. ...

Consider what you want your design to communicate to your customers.

wait i don't understand this, but my guess is that this is a trick question.