Mary prepares a salad at the same time the chicken is cooking in the oven. This statement is an example of HEALTHY MEAL PLANNING. John created a list of tasks to cook broccoli soup. This list also included estimated time it may take to complete each of the tasks. This statement is an example of WORK PLAN.
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.
