"Which" as used in this sentence is an "interrogative adjective". An interrogative adjective modifies a noun by asking question. In the given sentence, the noun "juror" is modified by the interrogative adjective "which" by asking the question.
So, interrogative adjectives usually modify nouns and are used in asking questions.
<span>The scene where Hal beats Buck nearly to death is called conflict. It presents an action sequence where one character gets involved physically or verbally with another character.</span>
