C - Teens do not need to worry about getting enough calcium<u> is false</u>.
The teen years show a growth spurt for most and calcium is the main minerals that strengthens the growing bones. Not enough calcium during those formative years can put the person at and increased risk for developing osteoprosis later in life.
Lack of attention, unfocused, daydreaming, etc
A good idea what one could do in the off-season (considering one would do seasonal sports such as skiing) would be to either engange in activities that will preserve fitness - b, or to relax and recuperate; depending on the desire and wishes of the person - a.
