Answer:
(b)The drink which has become the worldwide caricature of Britishness has nothing indigenous about it, but is the result of centuries of global trade and a complex imperial history.
Step-by-step explanation:
According to MacGregor, the drink he is referring to is the tea. The tea which was a very popular drink with the British did not originate from Britain. The tea was brought to Britain through international trade with other countries of the world.