Which scenario represents a scientific investigation?

- a measurement of growth patterns of crystals in space
- a selection of favorite songs in a survey
- a questionnaire on the quality of care in a hospital
-a survey on the best options for reducing air pollution

The correct option is: A QUESTIONNAIRE ON THE QUALITY OF CARE IN A HOSPITAL.
Questionnaire is one of the instruments used in scientific investigation to find out the real truth or the real state of a thing or situation. Questionnaires are usually distributed to the subjects of the experiments who supply the data that are needed for the investigation.

Essential for a scientist to do for credibility

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.

The experiment information is needed in order ro answer rhis question show your work