Answer:
Women had new clothing options after the bicycle's invention. - Dresses were shortened to four or five inches above the knee.
Women's clothing was designed for beauty. - The corset was designed to give women tiny waists.
The bicycle industry grew quickly over ten years. - By May 1896, Americans had spent $300 million on bicycles.
Some experts believed cycling was dangerous to health. - Dr. Richardson explained, "The spine... assumes the bent position."
Cycling was considered good for people's health. - Medical books link cycling to cures for asthma and diabetes.
Explanation:
The central idea (also called main or key idea) is the most important point the author is making in a text. In one text, there can be multiple central ideas, just like in the <em>Wheels of Change</em>.
Supporting details are facts, statements, and examples that clarify, explain, describe, expand, or illustrate the main idea. For example, the fact that dresses became shorter is an example of how women had new clothing options after the bicycle's invention.