Final answer:
Athletes choose one water source over another based on taste due to the type of minerals dissolved in the water.
Step-by-step explanation:
Athletes choose one water source over another mostly based on taste due to the type of minerals dissolved in the water. Different mineral compositions can give water a distinct taste that athletes may prefer or find more refreshing. For example, some athletes may prefer water with a higher mineral content for better hydration.
The type of bottle used to contain the water, the extent to which the label depicts the source as "natural", and the price of the water are not the primary factors that athletes consider when choosing a water source.
Learn more about Factors influencing athletes' choice of water sources