Read the excerpt from "I'm Not Thirteen Yet" by Amy Bernstein. At this point, I was lying on my back, and my head shot up when I heard the words "best friend." I squinted and saw Margaret standing above me. She extended her hand. She was ready to help me up. She grinned. From then on, I knew who my best friend was. She didn't care what age I was, and never would. To this day, we both have the framed picture of us at the bus stop that first day of camp.

What important lesson has the narrator learned?

Age is an important part of building good friendships.
Soccer can be fun, but it can also be very dangerous.
It’s worthwhile to preserve important events in photographs.
Fitting in and making friends is much easier than expected.