I would best go with choice C) visualization because agility is related to speed and acceleration, and yes you can have strength with agility and u need coordination to be balanced and stay in place as if you were jogging, and visualization means to create or make mental pictures inside your head and that really doesn't go along with agility so that's why its C).
By purifying it Mainly without Purfied tap water it can contain lead or and Eventually lead to lead poising and kill you
