Normal speech is regular among people
Heavy snoring occurs with some people (even if they're not under the influence)
Mild fever happens to everyone, not too big of a deal here
Slow & irregular breathing can be a sign of alcohol overdose
True, sleep problems indeed are a quite often occurence among children as well as adults - they do occur quite often but don't necessarily occur all the time for people to whom it does happen. At the same time, when someone suffers from sleep problems, this doesn't necessarily mean that he cannot sleep at all.
Answer C is a good example for that because when starting a school club you mainly will be focusing on that and most likely won't have time to drink or hang out with drinkers.
The fat - to - lean ratio being very high is the result of very limited movement wherein a lot of unused energy becomes stored as fat. So, from the given choices above, Peter should increase his participation in the cardiorespiratory activities. The answer to the question is letter C.