Select the option that can be used as a one-word substitute for the given phrase.
An important person who represents his/her country in a foreign country.

Correct option is B

The correct one-word for the given group of words is Ambassador.
· Ambassador: A diplomat who represents their country in another country (Hindi: राजदूत).
Example: The ambassador attended the summit on behalf of the country.
Meanings of the Other Options:
· Amateur: A person who engages in an activity for enjoyment rather than as a profession (Hindi: शौकिया).
· Altruist: A person who is selflessly concerned for the welfare of others (Hindi: परोपकारी).
· Anonymous: A person whose identity is unknown (Hindi: गुमनाम).