When people believe murder is a more common cause of death than stomach cancer is, it illustrates the:

Availability heuristic.

Explanation:

The individual sometime believes on his imagination rather than on the scientific or real fact. All these imaginations illustrate the individual mental and psychological health.

Availability heuristic may be defined as a type of the mental shortcut that relies on the individual's immediate reasons or on their examples while explaining something. The murder is intentionally and the individual relies that it is the common cause clearly illustrates the availability heuristics.

Thus, the answer is availability heuristics.

teens need 8-10 hours of sleep. it kind of depends on what time you get up. but prob around 10 or 11 p.m. or 11 or 11: 30 p.m.