Approximately 60% of total body weight is water. being adequately hydrated an athlete: regulate body temperature, transport nutrients, allows the heart to pump more easily, all of the above

Aand b would both be correct

I’m going to guess these are the choices: a) recreational skiing developed in the mid-19th century b) it was originally invented as a way of getting from place to place in snowy regions c) downhill skiing is currently the only common form of the sport d) it mostly evolved from snowshoeing- if that’s the cases then the answer would be c) downhill skiing is currently the only common form of the sport