“Once we get in there remember time is of the essence,” fiddling nervously with his jacket, Arthur addressed the group. “If we’re off even by a few seconds, the whole thing will collapse.” He glanced down at the watch on his wrist. “Everyone synchronize your watches to eleven forty-one. We move at eleven forty-five.” He swallowed like he was forcing down a stone and turned away from his team.

Based on the clues in the passage, choose the best definition below for “synchronize”:

To work against each other

To do at exactly the same time

To follow directions

To get prepared for an important mission

To do at exactly the same time