The answer is number 4) These numbers show that teenagers care about others.
Sentences 1-3 show evidence to support the main argument, which is that teenagers help others. Sentence 1 gives an individual example, and on sentences 2 and 3, it presents statistical data.
Sentiences 3 and 8 because they express emotional thought other than fact. For sentence three, using "terrible waste" can be debateable and shows more of an opinion. And sentence 8, by using "shouldn't" showing its still a posssiby something can or can not happen.
The answer in detail:
basically, the spelling is 'pizza' and you spell it, 'p i z z a'.