This advertisement is trying to get you to drink Gatorade over water because it claims to have all the vitamins and quenches thirst more than water itself. This advertisement can be logos because it is stating facts about the product and how good it is. It's talking about how it has carbohydrates and electrolytes to keep you active. It can also be ethos because this will make you think about whether you want to drink Gatorade or water the next time you exercise. For all we know it could be better than water at keeping you active. You might not ever actually know which one is better but based on the facts given you'd assume that Gatorade is better for when you exercise.
