Answer:
No; the study is based on a volunteer sample, which may be very different from a randomly selected one.
Explanation
Her plan cannot be effective because she could base her own judgenent on samples that was randomly selected for consideration.
This would be known as a communication skill, communication is also a really important must to health. Being able to communicate about your feelings, pain, symptoms, and so on lets others know ways to help you and get an idea of what may be going on
Eating well, exercise, sleep, drinking water, avoiding harmful habits , don’t get sick constantly
Answer:
the second to last one which is hanging out with different people
