The correct answer to this question would be option B, i.e. 'were' as the sentence exemplifies a subjunctive mood that describes a wish. Apart from other uses of the verb in the subjunctive mood(to describe unfactual or doubtful situations), it is also used to describe a hypothetical situation, wish or request. Since the sentence exemplifies a wish, thus, the correct form of the verb that should be used is "were".
If someone wanted to be a Archivist, they would have to work hard for it. If i can I would copy and past my last one of this but you know I can't reallt copy and past on here. But you know what I'm getting at..-
What would happen to long-term health if everyone had access to clean water? Is a good rhetorical question because you don't need to answer it, just maybe think about it.