Final answer:
The best advice a nurse could give to a client with insomnia is to get out of bed and do something like reading if they cannot fall asleep. It's important to not associate the bed with wakefulness and maintain good sleep hygiene practices, such as keeping a regular sleep schedule and avoiding stimulants.
Step-by-step explanation:
A nurse providing teaching to a client who has insomnia should make the statement: c. "If you aren't able to sleep, you can get out of bed and read a book." This aligns with the guidance from health professionals that recommend avoiding spending waking time in bed to not associate the bed with wakefulness. Therapists suggest that if you cannot sleep after a reasonable amount of time, it is best to leave the bed and engage in a quiet, non-stimulating activity, like reading, until you feel tired again. Watching TV can be stimulating and disrupt the process of falling asleep. Furthermore, tracking the number of hours slept each night without additional context is not necessarily helpful in addressing insomnia. Limiting daytime naps to a maximum of one hour may still be too long and could interfere with nighttime sleep patterns.
Effective sleep hygiene practices include maintaining a regular sleep schedule, avoiding stimulants like caffeine, ensuring a cool bedroom temperature, and partaking in regular physical exercise. These combined efforts contribute to a conducive environment for restful sleep and help train the body to associate the bed solely with sleep.