3. Why does Sartorius agree to come out?
(a) Kelvin says that a shuttle has come to take them away.
(b) Kelvin tells Sartorius about the visitor he's seen.
(c) Kelvin threatens to turn off the air.
(d) Kelvin threatens to break down the door.

4. What does Snow have on his hands?
(a) black markings
(b) dried bloodstains
(c) torn-up gloves
(d) ice crystals

5. How long does Kelvin tell Rheya they will stay on the station?
(a) a few days
(b) forever
(c) a long time
(d) about a month

6. Where does Snow say that Sartorius is?
(a) on the planet's surface
(b) in the laboratory
(c) in the kitchen
(d) in his quarters

7. Who was the first scientist to have a visitor?
(a) Snow
(b) Shannahan
(c) Sartorius
(d) Gibarian

8. Where is Gibarian?
(a) locked in a lab
(b) in the ocean
(c) on a shuttlepod
(d) dead

9. Which sun sets after Kelvin has showed and changed?
(a) the red sun of Solaris
(b) the blue sun of Solaris
(c) the yellow sun of Solaris
(d) the green sun of Solaris

10. What is the condition of the skin on Snow's face?
(a) sunburned
(b) red and raw
(c) wrinkled and dry
(d) deathly pale

11. What does Rheya remember about the time while Kelvin was in the bathroom?
(a) being alone and feeling frightened
(b) hurting her hands and screaming
(c) feeling angry and enraged
(d) passing out on the floor

12. How did Rheya die?
(a) suicide
(b) an accident
(c) murder
(d) a heart attack

13. Besides the envelope, what does Kelvin take from Gibarian's room?
(a) Gibarian's experiment notes and spacesuit
(b) Gibarian's broken watch and a tape recorder
(c) Gibarian's experiment notes and a tape recorder
(d) Gibarian's spacesuit and a broken watch

14. What does Kelvin do after he showers and changes?
(a) He takes a nap.
(b) He reads.
(c) He goes to look for Snow.
(d) He goes to look for Sartorius.

15. Has Kelvin met Sartorius, prior to arriving at the research station?
(a) No, he's never seen Sartorius.
(b) Yes, he's met Sartorius once, briefly.
(c) No, but he's seen pictures of Sartorius.
(d) Yes, he knew Sartorius well, once.