Answer:
c. They are very close, in spite of their differences.
Step-by-step explanation:
I know this questions is from the passage about "Gurdun and Ursula" right?
If it is, the answer is C. This is because in the passage, the difference in the personalities of these two girls is shown obviously. So that, the answer B and D is wrong. In addition, there is nothing in the passage indicating if Gurdun and Ursula share the same room or not.
Co-mate is defined as companion. In this passage, the close relationship and trust, and tenderness to each other of these two girls indicate that they accompany each other in their lives.