Answer:
are
Explanation:
When using "who", we might use are <em>or </em>is. It depends on the rest of the sentence.
"Who are we?"
"Who is ready to go?"
Both are correct.
- who are "we" {we is plural}
- who is... {asking about a specific individual's status}
Even though the rest of the sentence agrees with the singular "is" as opposed to "are"; You could say "Those are the candidates who are worthy of my vote".
For the first part of the sentence, you're specifically talking about a singular subject [not plural], Nora.
Because Nora "is" one of...
For the second part, you're talking about a group of candidates [plural] so following "who" should be "are".
Nora is one of the candidates who are worthy of my vote.
{You can almost always separate a sentence like this. }