The answer is A. spectators'. Because the apostrophe after the "s" means there are more than one.<span />
It changed over time because women started to want to wear different things. With the bicycle it changed because the movement needed to be fast. Because of the design of the bicycle from the early 1800's women most likely wore what they wore out of the household, including long skirts, blouses up to the necks and huge sun hats.
I agree because young people are learning new things about the wirld everyday and we can make a difference and change old thing to make them better we aren't the old book we are the new one