Question

Sometimes we need to stay the same, even when others change.
Insisting that others adjust to us will prevent us from having to adjust to others.
If we don't agree with others, we should act as though we do.
Drowning is the fourth most frequent cause of accidental deathin the summer.
Most people can learn to swim in ten short lessons.
The majority of water-accident victims require mouth-to-mouth breathing.
Heat exhaustion comes from overdoing in hot weather.
Dress in light-colored clothing to prevent heat strokes.

Which of these restate the key idea?