A client weighs 70 kg and is training to complete a marathon in a time of about 4 h. The client's sweat losses are expected to equal around 4 liters (about 6% of body mass). Which fluid intake goal would be most appropriate?
Select one:
a. Drink 1 liter of fluid during the race.
b. Drink 2 liters of fluid during the race.
c. Drink 6 liters of fluid during the race.
d. Drink 4 liters of fluid during the race.