Answer:
en is is a pronoun which is used to replace a noun. It's to make your sentence easier and shorter. You can also use en for a countable nouns, to describe something and to use the preposition de.
Explanation:
It is the former home of seven popes is the right answer
It's located in South eastern of France on the left bank of the "Rhône" river
and Paris is the capital of France ... (100 % sure !!!)
Hope I helped !
