The only word that could potentially be a compound noun is patents, but that has its own definition-a government meeting of some sort.
A compound noun would be a compound word that is also a noun, but there aren't really any compound words.
I know this doesn't really help, sry.
I believe the answer is B
A a dog bit me? so that means all dogs are mean
Regionalism is also sometimes referred to as "Local Color".
