A scourge is a whip — or anything else that is punishing and dreadful.
As a verb, scourge means to cause suffering.
Zapped means move or cause to move suddenly and rapidly or destroy or obliterate.
'The advertiser's scourge is the clue here. ' If the viewers change the channel during ads, it becomes a menace for advertisers. This results in the remote control becoming a scourge for the advertisers.
Hence, (B) is the most appropriate answer choice