Sorry I had to answer a question to ask a question so I’mma use you rq
I believe it is called interjection:) good luck!
Answer:
C. I'm studying Spanish because I've always wanted to visit Spain, and because my Spanish-speaking friends can help me.
Explanation:
'Spanish' is the name of the language; it requires capitalization regardless of its function as a noun or as a hyphenated adjective.