The correct answer is: [C]: "future" . ___________________________________________________________ Note the: "will" in front of the verb, "produce". This indicates the "future tense" ; as in something "will" happen (i.e. "at a later time"). ___________________________________________________________
I don’t have a lot of context provided to answer this, but i would say that their mother’s english limited possibilities of them learning things in other countries if the country they live in speaks english mostly, but i need more context