The answer is C, because it informs that since people are sharing information very quickly through the internet, it is <em>also bringing young people closer</em><em> </em><em>together than ever before</em>. In A we read that they are bringing people closer together, but the teenagers are <em>only included</em>. In B it is just mentioned that the tenagers are <em>generally brought together</em>.
14) Is incorrect ,here iswhy.First of all 8 x 10 = 80 so that would proove that 8 is a factor of 80. Second of all just because a number doesn't end in zero doesn't mean it's not a factor of a number
