Macao was a
a. trade route.
c. british explorer.
b. port city.
d. chinese delicacy

Macao is a city (in an autonomous region in China today) - so it can't be an explorer or a route or a delicacy - so just knowing that Macao is a city is enough to know that  answer b) is the correct one.

It was a port city where the foreigners could trade with the Chinese.

While winters are rainy, summers are dry. regions with this climate are usually in the eastern part of the continents. they experience hot, humid summers and colder winters. precipitations have a regular distribution throughout the year, but hurricanes are common.

Answerepicenter;