Select from options: Continue writing the next sentence.

How to wake up from your dream
Set an alarm.
If you are worried you may have a dream that you will want to wake up from, set an alarm for somewhere after 90 minutes into your sleep. Rem sleep happens 90 minutes into sleep, and it is during this cycle of your sleep that you dream, so having an alarm rouse you might help.

Select from the following. a. Get out of bed so you can focus on something. After rising, you may have a bad dream that you can't stop thinking about, so getting up and looking around might help you wake up.; b. If you can't wake up one hour earlier, set some alarms to get you up in the morning. You may be less likely to get in trouble if you wake up earlier.; c. Avoid setting the time anywhere that seems too early. You should aim for 11 am instead of 10pm.; d. Some alarm clocks have more than one alarm you can set, so you can wake up from separate cycles of rem sleep. You can also use a mobile device, many of which allow you to set as many alarms as you like.;
Answer:
d.