Final answer:
Yes, a defender can juggle the ball up and pass it back to the keeper with his head. The goalkeeper can handle the ball while inside his arc.
Step-by-step explanation:
Yes, a defender can juggle the ball up and pass it back to the keeper with his head. It is a technique commonly used in soccer when a defender wants to reset the play and send the ball back to the goalkeeper. The goalkeeper can handle the ball while inside his arc, which is the penalty area in front of the goal. The goalkeeper is allowed to use his hands to catch or stop the ball within this area.