I think your answer is Green
Answer: Double blind clinical trial
Explanation:
The situation that is seen here is double blind clinical trail in which neither the participant nor the practitioner knows who is receiving the treatment.
This is used to prevent biasing in the experiment which is caused due to demand characteristics or placebo effect.
Here, in this situation the dog handlers and the experimental observer both were blinded to identify the breath sample.
Well hello . Ummmm hi i guss
The scientific method is a systematic process that involves:
Making an observation.
Stating a question.
Formulating a hypothesis.
Conducting an experiment.
Analyzing the data and drawing conclusions.
