Answer:
No matter in what capacity you are writing a letter of advice, the burden lies on you, to give a positive response. Before responding to such a request you should think about it, but the letter should not be delayed. You should choose your words carefully, do not try to be judgmental. Make the person believe that you really care about him or her and the opinion you are giving is based on the sincerity. If you consider the topic sensitive, you should consider your approach carefully and avoid strong language. Its better to restrict your opinion, to the subject that has been asked do not add other aspects to it.
Maastricht Treaty is the legal document which created the European Union.
Answer: have improved metalinguistic ability.
Explanation: Metalinguistic skills are the abilities that helps in supporting and managing any language's linguistic factors through control and realization. It gives the freedom of discussing languages who have the understanding and listeners of the language have to be aware to identify the details.
According to the situation mentioned in the question, Henry will get to improve the metalinguisitc ability because he is bilingual person so will display a better understanding for German.
Other options are incorrect because he will face some difficulty if he doesn't listen properly, can find problem in vocabulary and syntax as well and it does not display metalinguisitc mistakes
