Step 1 Identify the problem.

Passage:
Two aliens, Zor and Luma, stood on the rocky surface of Planet Drix. Zor held a glowing crystal tightly. Luma reached out and said, “We must share it, or neither of us will survive.” Zor scowled, turned his back, and kept the crystal clutched in his hands. The glow dimmed quickly, leaving both aliens in the dark as the storm swept over them.

What is the problem in the passage?

Step 2

What are the clues that show the character's response to the problem?
What does the text show about how Zor responds to the problem?

Step 3 Make an inference about the character's personality.
What does Zor's response suggest about his personality?

Step 4 Explain how this personality trait makes sense.
What is the typical behavior of someone who is selfish?