B. Though Benjamin Franklin was known for his instrumental role in the founding of the United States.
This is a sentence fragment, you can tell because saying the sentence in your head or out loud feels incomplete, that is because the sentence wasn't finished, for example, "Though Benjamin Franklin was known for his instrumental role in the founding of the United States, he had many other accomplishments." Is a full sentence.
Answer: They are words that connect or join sentences, clauses, or phrases together.
They are words that show cause and effect to answer the questions, "Why it happened" and "What happened"
Explanation: Coordinating Conjunctions such as <em>and, but, or, yet </em> connect sentences, clauses and phrases.
Subordinating Conjunctions such as <em>although, because, so that, if, </em>show cause and effect.
1) my mother’s name is ____ and my father’s name is ______.
2) there is a cat that roams the streets at night.
3) i had the best idea last night.
4) i watched the stars last night with my best friend.
5) i would like to visit London, England or San Francisco, California.
I believe it's unknown since the Mississippi is the predicate and unknown is a describing word, a.k.a. an adjective but I'm not sure
Good luck, hope I helped!