A juxtaposition of reality and dream sequences begin when the protagonist is hospitalized after a motorcycle accident. Asleep after surgery, he dreams that he is in flight from the Aztecs in a ritual war and must stay on a trail known only to the Motecas. He wakes, thirsty and feverish, to find his arm in a plaster cast. He eats and sleeps once more, dreaming this time that he is off the trail. He grasps his amulet and prays, but is captured. Awake again in the hospital, he thinks of the strange, almost infinite, loss of consciousness he had experienced after his accident. Dozing, he awakens this time pinned to the ground by ropes. His amulet is gone. He knows he will be sacrificed and the priests carry him away. He awakens one last time, but this reality quickly merges with the dream. The priest is coming toward him with the stone knife, and he realizes that he is not going to awaken; that he is awake, and that it is the other consciousness which was a dream.
Devise means "plan or invent (a complex procedure, system, or mechanism) by careful thought." by definition, meaning that devise means to come up with a plan.
The best correction of the clause fragment is to C. delete the word "although." Without that word, you get a proper single independent sentence, and not a fragment.
