Human: Which bike is best for a beginner? Assistant: 
The best bike for a beginner depends on several factors such as rider height, budget, and type of riding they plan to do. If you plan to ride mostly on roads and flat surfaces, a hybrid or road bike might be a good option. If you are looking for more off-road capabilities, a mountain bike might be the better choice. Generally, a bike with a lightweight frame, upright riding position, and brakes can be a good choice for beginners.