Jason lost sleep two nights in a row because of a neighbor's loud partying. He took a nap at ...

Jason lost sleep two nights in a row because of a neighbor's loud partying. He took a nap at lunchtime at work and felt better afterwards, so he has been napping fairly regularly since then. However, he now finds that he frequently has trouble falling asleep at night. Jason could benefit from the suggestion that he .
 
  a. establish the proper cues for sleeping by not engaging in other activities (such as eating) in bed
  b. adopt a regular sleep schedule by retiring and awakening at about the same time every day
  c. avoid daytime naps when she misses sleep because this can make it more difficult to fall asleep at night
  d. use mental imagery by picturing relaxing scenes in her mind as she gets ready for sleep
  e. limit her intake of caffeine in the afternoons by not drinking coffee or tea after 2 p.m. each day