When I was a kid, I took great pleasure in jumping on my bike and riding to the corner candy store about half a mile away. Although I had no knowledge of the part the bicycle had played as a vehicle of change for turn-of-the-20th-century women, I was acutely aware that it allowed this 1960s girl a unique measure of independence. On my bike, I could break free of the bonds that held me in my neighborhood to go buy Necco Wafers and candy necklaces and Atomic FireBalls. If I felt particularly adventurous, I could even ride a bit farther for a fresh ice-cream cone at Applegate Farm. —Introduction to Wheels of Change,
Sue Macy

What is the central idea of this passage?

The bicycle provided a way for Sue Macy to buy candy from the local store.
The bicycle provided joy and independence for Sue Macy at a young age.
The bicycle provided a vehicle of change for the twentieth-century woman.
The bicycle provided exercise for young children in the writer’s neighborhood.