When groups with different languages have constant interaction within a given space,

one of the languages becomes the new language of both.

a new language is created out of the two languages.

the groups go to war because they can't communicate.

the groups each maintain their own language.

When groups with different languages have constant interaction within a given space, a new language is created out of the two languages.

Answer: Option B

Explanation:

Every country have its own language. In Germany people speak German language, in China they speak Chinese and so on.

But what happens when people from two different countries interact who speak two different languages which are unknown for both of them? In such cases new languages are being created. There's also a name for such cases, it is called creole.

Many languages sounds similar, and they also have many common words, this in itself develops into a new language. British-Canadian is an example of new language.