The library Wi-Fi kiosk requires a symmetric connection to the Internet. Which WAN technology would probably be the least expensive option if the kiosk is within 0.75 miles of the telephone distribution office?

The answer is IP-sec.

Explanation:

0.75 miles of range is a low distance for a WAN (Wide Area Network) so a point-to-point WAN tehcnology such as IP-sec or SD-WAN can be preferred. But the least expensive option would be choosing IP-sec as specified in the question.

I hope this answer helps.