Final answer:
A protein shake is the best option to speed up recovery after a workout because it contains quality protein for muscle repair. A banana is also a good choice as it replenishes glycogen and provides potassium, while chocolate bars and potato chips are less suitable.
Step-by-step explanation:
The best snack option to speed recovery after a workout from the choices given would be a protein shake. Protein shakes contain protein powders, which can be made from various sources and are popular for their rich amino acid profiles and high digestibility, especially when consumed before and after exercising. They help in repairing and building muscle tissues. On the other hand, a banana can be a good choice as well because it provides carbohydrates that help in replenishing the body's glycogen stores, and it's rich in potassium which aids in muscle function. Chocolate bars and potato chips are less optimal as they typically contain high amounts of sugar or fats and are low in essential nutrients required for recovery.