Colette is a business executive from France, and Franz is a business executive from Germany. Colette does not speak German, nor does Franz speak French. Which language are they most likely to conduct business in?

English.

Explanation:

English is considered to be a universal language as it is the official language in seventy countries and spoken by 20 percent of the world's population. It is the second language of the world, which means the most common language spoken after a person's mother tongue. Globalization is being taken seriously by the world and having a common language just makes it simpler. It promotes the flow of information and gives people a common ground.