Which statement is an example of cultural convergence?

a. in southwest asia, people first tamed and herded animals.

b. because the african slaves brought to the americans spoke many different languages, communication with each other was difficult

c. because to united states was once a british colony, english is the language spoken by the majority of its inhabitants

d. in some countries, only one religion is officially recognized.

This is all you, but i can give you some topics that you could try. if it rained when you want to do something outdoors, it 'limits' that human activity. maybe you want to do an experiment that goes throughout the whole year and you have to have above freezing the entire year. this 'limits' your activity. i thought of those just off of the top of my head. something that gets to me that might be getting to you is you are thinking too hard about what to do. think simply, and if it is too simple, then bump it up just a little bit.