2. How do gibbons usually live?
(a) Mothers live with their children until the young have grown enough to leave.
(b) In large noisy communities.
(c) By themselves, rarely seeing another gibbon.
(d) In pairs, often staying together for many years and taking care of their children.

3. What DNA instructions do human bodies have about sweet foods?
(a) Enjoy in moderation.
(b) It is poisonous. Give it to your enemy.
(c) If you find it, eat as much possible.
(d) Do not eat it.

4. Roughly how long would it take someone to carve a single bead out of ivory?
(a) 45 minutes.
(b) A month.
(c) 2 days.
(d) 5 minutes.

5. How much did a mammoth weigh?
(a) Around as much as a large car.
(b) The same as a horse.
(c) Roughly the same as a cruise ship.
(d) About as much as a school bus.

6. What does the author imagine a woman screaming when she saw "strange humans in the valley below" (138)?
(a) Help, the enemy is here!
(b) Monsters! Monsters!
(c) Neanderthals!
(d) Run away!

7. How many astronauts were on board the spacecraft that landed on the moon?
(a) 4.
(b) 2.
(c) 5.
(d) 1.

8. Why do people not know about specific historical events from the Stone Age?
(a) People have forgotten the stories.
(b) Nothing happened.
(c) Those in power destroyed the documents.
(d) Nobody wrote them down.

9. When was Lascaux Cave discovered?
(a) 1983.
(b) 1857.
(c) 1940.
(d) 1708.

10. How many huts were found at Ohalo?
(a) 40.
(b) 25.
(c) 6.
(d) 3.

11. How did Stone Age people get paint?
(a) They crushed colorful stones and mixed them with water.
(b) They mashed up a certain kind of beetle.
(c) They traded for it with Neanderthals.
(d) They soaked flowers in water.

12. How old is the painting in Lascaux Cave?
(a) 7,000 years old.
(b) 10,000 years old.
(c) 17,000 years old.
(d) 32,000 years old.

13. How long is a modern factory worker at their job for?
(a) 6 hours.
(b) 16 hours.
(c) 12 hours.
(d) 10 hours.

14. What was the name of the astronaut who waited on the mother ship?
(a) Michael Collins.
(b) Maurice Richard.
(c) Thomas Biggio.
(d) Simon Chapman.

15. Where do modern hunter-gatherers mostly live?
(a) Caves.
(b) Antarctica.
(c) European forests.
(d) Jungles and deserts.