Welche Bedeutung steckt hinter der hier vorgestellten Vokabel aus dem Bereich Office gossip?

Joe: 'The head of accounting has sparked a big row. He has proposed that the frequent-flyer miles awarded by airlines to our company's employees are to be used only for future business trips and not for private holidays!'

to spark a row

Do you know what it means?

• to begin a serious talk
• to cause an argument
• to tell a joke