Answer:
Option C, It was a time of solar maximum, and there had been a big flare on the Sun earlier
Step-by-step explanation:
It was solar maximum due to which the amount of magnetic flux on the sun's surface rises up
This causes high frequency radio blackouts and interrupt with the communication on earth
Some times they also cause ripple effect in the electronic items as in the remote control used by the college student. They can disrupt the electronic communications.
Hence, option C is correct