Ethical principles developed by psychologists urge investigators to

The ethical principles developed by the American Association of Psychology and the British Society of Psychology urge researchers to:

1- Obtain the informed consent of the participants

2-Protect participants from any damage or discomfort

3-That the information referred to the participants be confidential

4- The participants receive a complete explanation of the research developed

It is important to know that research projects are usually selected by an ethics committee that protects and monitors compliance with those principles.

it would be d). more resources must be obtained to attain that combination of goods and services