Determine what type of observational study is described. Explain. A researcher wanted to determine whether there was any association between economic status and happiness. She selected a sample of 1000 adults and interviewed them. Each person was asked about their financial situation and their level of happiness was evaluated. The researcher analyzed the results to determine whether there was an association between economic status and happiness.

cross-sectional

Explanation:

Based on the information provided within the question it can be said that the type of observational study that is being described is a cross-sectional study. This is a type of study in which information is collected at a specific point in time. Since the 1000 adults were selected and interviewed in the same time period then it can be said that this study is a cross-sectional study.

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.

answer; love and belonging needs;