Answer:
PSTN
Explanation:
The full form of PSTN is Public Switched Telephone Network. It is a traditional circuit-switched telephone network which is used by the several regional, local or national telephony operators. They came in used in 1800s. It is a form of communication among the people which works with the help of underground copper wires.
In the context, when I am travelling through the metropolitan as well as the rural areas of the North America, the PSTN provides the internet connectivity in all the places. It helps me to communicate with the other people with the help of a telephone.
The answer that would best complete the given statement above would be option 5. The purpose of a method's postcondition is to describe the conditions that are true when the method completes. On the other hand, precondition describes the conditions that are true before the method is complete. Hope this helps.
You can't do it to Google play. but you can connect to your computer and extract it and play it as a file