Final answer:
At the Sturgis, South Dakota rally, 'How many CC you got?' refers to the engine displacement size of motorcycles. CC signifies cubic centimeters, a unit that measures engine volume.
Step-by-step explanation:
The phrase "How many CC you got?" might be heard at the 75-year-old Sturgis, South Dakota rally, and it refers to the engine displacement of motorcycles. CC stands for cubic centimeters and it's a unit of volume used to measure the size of a motorcycle engine. The larger the number of CCs, the more powerful the engine typically is.
Various types of transports such as cars, bicycles, and trucks could be found at different events, but the Sturgis rally is famous for its gathering of motorcycle enthusiasts. So, when someone asks about CC at this event, they are most certainly talking about motorcycles, making (a) Motorcycles the correct answer.