3. If Brian could travel in a straight line, about how far would it be to the trading post?
(a) 75 kilometers.
(b) 90 kilometers.
(c) 85 kilometers.
(d) 80 kilometers.

4. How far is the river straight before curving as Brian gets the raft moving?
(a) 175 yards.
(b) 150 yards.
(c) 100 yards.
(d) 75 yards.

5. What did the raft weigh at the end of the journey?
(a) About 300 pounds.
(b) 250 lbs.
(c) 150 lbs.
(d) About 400 pounds.

6. Brian drifts into the lake and tries to get out by paddling. About how fast is the raft moving?
(a) 2 mph.
(b) 3 mph.
(c) About a mile an hour.
(d) About a half a mile an hour.

7. From where Brian stands in the water, at the beginning of Chapter 22, how far away does the water change colors?
(a) 1/4 mile.
(b) 1/8 mile.
(c) 1/2 mile.
(d) 3/4 mile.

8. When Brian figures how fast the raft is traveling, how long does he estimate it will take to reach the trading post?
(a) 6 days.
(b) 3 days.
(c) 4 days.
(d) 5 days.

9. What is on the bottom of the section of river where Brian finds himself, at the beginning of Chapter 22?
(a) Mud.
(b) Gravel.
(c) Weeds.
(d) Sand.

10. How long does it take Derek to recover completely from his ordeal?
(a) 7 months.
(b) 6 months.
(c) 5 months.
(d) 4 months.

11. What was the average current speed of the river when Brian and Derek were traveling on the raft?
(a) 3 mph.
(b) 1 mph.
(c) 4 mph.
(d) 2 mph.

12. What is the diameter of the smaller sticks Brian uses to make cross-pieces?
(a) 2-3 inches.
(b) 3 inches.
(c) 4 inches.
(d) 1-2 inches.

13. What does the trading post consist of?
(a) Two outbuildings.
(b) A large house and barn.
(c) A small cabin.
(d) A house and several sheds.

14. How long does it take Brian to build the raft?
(a) Not quite 2 hours.
(b) Not quite 3 hours.
(c) 5 hours.
(d) 4 hours.

15. About how many miles will Brian travel if he uses the river to get to the trading post?
(a) 150.
(b) 100.
(c) 215.
(d) 50.