Rachel has been suffering from tension headaches and insomnia for several months. rachel has been under pressure at her job and is also worried about her daughter starting high school in the fall even though her daughter has always been an excellent student.
rachel may be suffering from

Rachel may be suffering from generalized anxiety disorder (GAD).

People who suffer from generalized anxiety disorder persistently worry about common occurrences or situations. They usually imagine the worst scenario in a situation, even though there is no particular reason for doing so. In this example, Rachel is aware that her daughter is a good student, and still cannot help but worry about her entering high school.

"social stratification refers to the way people are ranked and ordered in society. in western societies, stratification is primarily seen and understood as a result of socioeconomic status, which produces a hierarchy in which access to resources, and possession of them, increases from the lower to the upper strata"

d is the correct answer.

b is incorrect because it makes food by itself

c is incorrect because us humans don't know how to produce their own food using the sun like plants.

a is incorrect because consumers can depend on carnivores for eating food for consumers to eat the dead organism. same thing with omnivores.