Concept:The given sentence uses four words in a logical order that already expresses the intended meaning clearly.
Explanation:The sentence is: "No matter how rigorous he was in his pursuit, the woman would not agree to date him."
The word 'rigorous' (A) correctly modifies the man's effort.
The word 'pursuit' (B) correctly names the action he is doing.
The word 'agree' (C) correctly shows the woman's response.
The word 'date' (D) correctly states what she refuses.
All four words are placed in their proper positions to convey the idea that despite his determined efforts, the woman did not consent to go out with him.
No interchange between any of the words is needed, because the sentence is grammatically correct and contextually appropriate.
Therefore, option 5, which indicates no change is required, is correct.
Answer:Option 5 (No change required).