The most likely class of aircraft for the Springboks would be B) Business Class.
The Springboks are professional athletes who require consistent rest and recovery. Business class offers more comfortable seating, more spacious cabins, and better food and beverages compared to economy class. This would allow the players to sleep and recover properly during long flights, which is essential for their performance.
The Springboks are traveling long distances and will be making multiple flights throughout their tour. Flying business class will save them time and energy, as they will not have to stand in long lines or wait for economy class boarding.