medicine and computers. manufacturing and home entertainment. refrigeration and heating systems. communication and transportation.
I gave my students this multiple choice question: Years ago, most family members lived near one another. Today, family members often live all over the country. People are able to live far from their loved ones because of the technologies of

Only one answer is correct among these 4 choices:
- medicine and computers.
- manufacturing and home entertainment.
- refrigeration and heating systems.
- communication and transportation.

Could you tell me which one is correct?

communication and transportation.