B. A proper noun. This is because proper nouns are always capitalized no matter where they fall in a sentence. This includes if they are in the middle of a properly written sentence.
The word is a proper noun if it is capitalized in the middle of a property written sentence. So the best answer among the following question is letter B. Proper Noun. I hope you are satisfied with my answer and feel free to ask for more and feel free to ask for more