To stop snacking while watching television, people should keep their hands busy by sewing, painting, working crossword puzzles, and so forth. Over time, watching TV becomes a cue for engaging in an activity other than snacking. What method is used in this example

A．The general knew that Mishima hint longed to die a hero's death.
B．The general was greatly taken aback by Mishima's suicide attempt.
C．Some soldiers surrendered after Mishima's speech.
D．One of Mishima's aides was killed by the soldiers.

A．was well received by the soldiers
B．was laughed at by the soldiers
C．impressed the commanding general
D．left a deep impression to the soldiers