pencil computer telephone AM/FM radio
I gave my students this multiple choice question: Ravi, who lives in Stow, Massachusetts, wants to send a message to his friend in India. Which tool would be the LEAST helpful in sending this message?

Only one answer is correct among these 4 choices:
- pencil
- computer
- telephone
- AM/FM radio

Could you tell me which one is correct?

AM/FM radio