bbrogle8190 bbrogle8190 23-04-2024 Health contestada According to the National Sleep Foundation, approximately 30% of Americans are sleep deprived. a. True b. FalseA series of stressful events that results in chronic insomnia can be categorized as:a) a predisposing factorb) a precipitating factorc) a perpetuating factord) A series of stressful events fits into all of these categories.