When preparing for an endurance race such as a triathlon, athletes must run and swim long distances, train themselves to master boredom and mental fatigue, and consume highly nutritious food to provide enough energy to sustain their bodies during the intense physical stress of the training period.

A. highly nutritious food to provide

B. highly nutritious foods for providing

C. food that is highly nutritious, and which provide

D. highly nutritious food that provide

E. foods which is highly nutritious in order to provide


OA A

Source: Princeton Review