Fact 1: Atelephone is used for communication by humans over long distances. Fact 2: Effective communication requires skills in conveying and receiving messages. Given the two facts above, what does a telephone help humans do over long distances?
Available choices: 1. send files; 2. Transfers energy; 3. lowered energy cost; 4. hold hands; 5. extremely important; 6. conveying and receiving messages; 7. watch television; 8. A transportation fuel;
6.