Why is it important to learn a few key phrases in the language of a colleague in another country?

A) To help determine the nature of ethics and values
B) To better learn about the economic and business institutions
C) To indicate you are committed to the business relationship
D) To increase your understanding of religious beliefs
E) To better assess political patterns

Learning a few key phrases in the language of a colleague in another country is a sign of commitment and respect towards the business relationship. It also helps in effective communication and building trust with colleagues from different cultures, which can be beneficial for business success. Understanding the language and culture of a business partner helps to avoid misunderstandings and promotes smoother interactions.