The correct answer for the question that is being presented above is this one: "C. faulty pronoun agreement; B. lack of parallel structure; <span>A. split infinitive" The errors that are present in the sentence includes the parallel structure, the infinitive and the pronoun agreement.</span>
He's unable to say thank you at the end
By creating a setting for the main conflict when Madam Yuen brings Ju -Lun home
Sentence structure is pretty important. Why? For one, so you can understand the exact meaning that the person wants to portray. Also, so you can communicate more easily and effectively. If I said: "My sister bought a shirt from the department store that costs three dollars" What? The department store costs three dollars? No, the shirt did. What you just witnessed was a misplaced modifier. Other grammar slips are quite amusing, but none of it would have never happened if you had only used proper sentence structure.
It also helps with diagramming.