This is a complex sentence it includes a subordinate clause (one that CANNOT stand by itself), and a dependent clause. You can tell this because if I were to walk into a room and say, "When K and C read the same foldable....", you would be waiting to hear the rest, wouldn't you? A compound sentence has two independent clauses joined by a comma and a coordinating conjunction (but, and, for, nor, or, so, yet). A simple sentence is just an independent clause.
You use were was doesn't sound right
Answer:
b. is not a feature of myths represented in the Onandaga creation story
Explanation:
1. Would you like to join my band? - add 'you like to'
2. Martina's band has played in concerts since 2013. - add 'since'
3. Her old band was not as good as her new one. - add 'as good'
4. There are six people in Martina's band. - add 'are six people'
5. You don't have to pay anything to get into their concerts. - add 'have to'