Which idea from the text provides evidence supporting the claim that the United States needed a better highway system?
A
1954 was a year in which a new federal-aid highway act would be needed.
B
Only 24 percent of interstate roadway was adequate for present traffic.
There were extremes of weather to deal with on United States roads.
D
The central controversy was over the division of funds among states.

Delegates: representatives who cast votes at a political party's national convention. binding: if a primary or caucus is “binding” that means the delegates won in that contest are legally bound to vote for a particular candidate at the parties national convention.a primary is a preliminary election used to determine a party's nominee for a specific office. the winner of the party's caucus, or primary, wins the party nomination for that state. then the delegates meet at their party's national party convention, which is a formal gathering of all party delegates from all states.