in europe where winters are long and hard cuckoos are considered a sing of spring
a: independent clause
b: adjective clause
c: adverb clause
d: noun clause
where winters are long and hard is underlined.

That is an adverb clause. Adverb clauses are dependent, so A cannot be the correct answer. And since it refers to the place where 'winters are long and hard', it must  be the adverb clause.

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.