Answer:
The most common language used in the office is English. It's spoken in 94 countries by 339 million native speakers and is the official language of the 20 most relevant international organizations, making it a very widespread language.
Explanation:
Because English is the common language or mode of communication that enables people to understand one another regardless of their cultural and ethnical backgrounds. It makes communication a lot easier and understanding one another has become efficient. Also because big countries like America and Europe use English so other people have been used to using it.
