This sentence is a complex sentence. Usually, a complex sentence is composed of one independent clause and one or more dependent clause. In the sentence, there is one independent clause (use the pump in the storage room) and one dependent clause (if the ball needs air). So, the answer is C.
Olaudah Equiano wasn't put into fetters on the slave ship because of his extreme youth.
When he was made to board the ship, he was still very young so I guess the slavers took pity on him and let him go about the ship freely, without having to be confined. Equiano was a slave, however, he was freed at one point, and then he started supporting the movement to end slavery.
Answer:
As the court is adjourning, the hag petitions the queen to force the knight to fulfill his promise to her: she wants the knight to marry her. Despite the knight's reluctance, the queen insists that he must do so, and the knight and hag are married.