The cycle is called Yo-Yo dieting.
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.
I think it’s 2.They allow people to avoid experiencing sadness.
Things like running around the house will not be done as a kid, since as a kid you were way more energetic, but now as a young adult that may not be the case.
I believe 7% is almost correct because most people can try to quit smoking a year but hardly ever succeed
