The author uses the metaphor of doors to symbolize A) the east and west coasts of America. B) the attitude people have about California. C) the process of people fleeing persecution. D) the age of exploration and discovery of the New World.

(D) the age of exploration and discovery of the New World.

Explanation:

The Age of Discovery or Age of Exploration was a period from the early 15th century that continued into the early 17th century, during which European ships traveled around the world to search for new trading routes and partners. They were in search of trading goods such as gold, silver and spices.

the answer to this question is d