Answer:
A) a cycle has begun in which personal computer users
Explanation:
Option A as already used in the question fits and and completes the question correctly, this is because the because the writter is trying to communicate a new 'era', 'dispensention', 'period' or 'season'.... this is appropriately communicated with the word 'cycle'.
Ad-hoc
Explanation:
In which wireless configuration type do nodes communicate directly with each other, rather than with an access point? In an AD-HOC network, all nodes communicate and transmit directly to each other.
