Fact 1: Atelephone is used for communication by humans over long distances.

Fact 2: Communication is essential if a relationship is to last the distance.

Given the two facts above, answer the question "What do telephones allow?" with the following options: 
- consumer-grade invisibility
 - animal transport
 - flow of electrons
 - electromagnetic energy
 - A transportation fuel
 - magic
 - relationships to last distance
 - instant transfer of matter


 

       relationships to last distance  