These buildings would attract new residents. and the increased population would probably result in overcrowded schools and would certainly result in roads so congested that new roads would be built. Neither new roads nor additional schools could be built without substantial tax increases for the residents of Glen Hills
I disagree with B. Just for the reason that there is a 'probably' that connects the premise to the conclusion.
Why isnt A the right answer?[/quote]
Yup, I noticed "probably" also and thought that A is correct answer.