Final answer:
The passage has a casual style, mentioned in the context of Zora and Jacob's preparation for running, which involves eating a balanced meal before their activity.
Step-by-step explanation:
The passage discussing Zora and Jacob's preparation for long-distance running, in which they find that eating a filling lunch helps them perform best, employs a casual style of writing. This is reflected in the use of personal names, relatable scenarios, and accessible language. The text captures the habits and thoughts of runners like Zora and Jacob who follow the common strategy of eating well before a run and waiting at least an hour to let their food digest. Although the passage doesn't delve into the science of it, for long-distance events like a marathon, carbo-loading with polysaccharides like starch helps to ensure there is ample glycogen stored in the body's muscles, which is then used for energy during the race.