Mary jane, a psychologist, would like to conduct research in the form of naturalistic observation of marijuana sales and use among teenagers in her city’s poorest neighborhood without their knowledge. what problem does this approach raise?

The research may be unethical  

Explanation:

The ethical concern is very important code in conducting a researcher. If someone, whether it is a psychologist or a researcher, wants to studies on a topic, they have to take the legal concern of the population. It should in the knowledge of a person at whom a psychologist conducting research. There some codes and ethics that a researcher has to follow to conduct his study.  

There are some ethics such as:

cause you are attracted to the features of girls or if you are a boy you are attracted to the features of a boy.

answer; to save lives and protect property;