英语翻译1 What‘protection’ did Chicago gangsters give to those w

英语翻译
1 What‘protection’ did Chicago gangsters give to those who paid them?
a．They saved those people's businesses from destruction.
b．They left those people's business premises unharmed.
c．They protected those people against criminals like Sir John Hawkwood.
d．They did not take those people's lives.
但这句话我不太理解,
应该怎么翻译呢?
b．They left those people's business premises unharmed.
课文在这:

这句话的意思和原文中“the gangsters would quickly put a man out of business by destroying his shop.”是对应的；不交保护费,就会破坏生意,但怎么样破坏呢?是通过destroying his shop,因此,反过来,要保护的话,也就是protect his shop.
B答案中,premise是房子的意思,（可以查字典）,就是指原文中的shop.答案的直译就是：保护这些人的商店不受破坏