Answer:
for Elizabeth to develop an interest in witchcraft
Based on the given sentences above, the answer would be the third option. The sentence that has a prepositional phrase that modifies a noun would be this: Icicles with long points hung from the roof. The prepositional phrase in this sentence is "<span>with long points" and it modifies the noun "icicles". Hope this answer helps.</span>
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I believe that 'ONES' in this sentence is a (B) direct object.
this is because 'one's is the subject of the sentence upon which an action is being done. The action is being 'introduced'.