Answer:
A. The British protect their citizens from opium by making it illegal, but they willingly harm Chinese citizens by selling opium in China in order to make a large profit.
Step-by-step explanation:
The main reason that Lin Zexus had to send the letter to Queen Victoria was to complain about the double standards that the British empire was having by prohibiting opium in England to protect their citizens from the consequences that the addictive drug has, but because it was an easy to sell product and produced large profit for the crown they were selling it in China were they didnĀ“t have to deal with the consequences.