most authors reported negative psychological consequences of disasters. ... As discussed, many of the initial reactions to disasters can be considered
In order to find out which evidence will be the best one, we have to pay attention to the point on which author makes accent. As for me, author emphasizes that such physical activity as walking can positively affect our mental state, and the only option which maintains this idea is C. Endorphins released during walking build brain cells and make people feel good, because it points out the mood and state of a person.
The answer is all of the above except choice 3.
In a business setting, you never want to use a detached tone. This gives the impression to your colleague/boss/etc. that you don't care and don't really want to be there. It shows that you don't see them as important and don't care about what they have to say. It won't achieve anything for you.