B is correct because I have learned Psychology relating to this
The best response is not to believe immediately. You should examine first the product if it is safe for you. You can look it up in the internet, look for reviews, feedback and testimonies. It is important to research first before taking any drugs or supplement cause you might end up harming yourself.
Explanation:
Regular activities can be said to be as any movement of the body that requires the use of energy. This includes all forms of physical education like dancing, sports, etc.