Concept:The sentence contains two misplaced words that must be interchanged to make it grammatically and contextually correct.
Explanation:The given sentence is: "Their love (A) story was one that was so remember (B) that people would unique (C) it for years (D) to come."
The phrase "so remember" is incorrect because the adverb "so" must be followed by an adjective, not a verb.
The phrase "would unique" is also incorrect because "would" must be followed by a base verb, not an adjective.
Here, "remember" is a verb and "unique" is an adjective, so they must be interchanged.
The correct sentence becomes: "Their love story was one that was so unique that people would remember it for years to come."
Thus, B and C should replace each other.
Answer:Option 2 (B-C) is the correct combination.