The answer is b, it’s very dry
Well, if you make a limestone tower and a acid rain falls onto it, the tower will dissolve and then you won't have a tower
In historical terms, this would be called a colony, but currently this name is no longer used and there are no places actually known as "colonies".
The current political term for this is a "territory": this is the correct answer, one example are the overseas territories of France.
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