Answer:
B.
Explanation: It would make the most sense for it to be B. since the others don't make much sense. Like why would you put parentheses around famous? B makes the most sense. :)
B, Mark Twain (whose real name was Samuel Langhorne Clemens) is a famous American author.
<em> I hope this helped, enjoy your day.</em>
Explanation:
A conjunction
