I'm not 100% sure but I think it is A. Sorry if it is wrong.
The answer is TRUE. Prehistory is define as the time before the people could write, or it was the time before recording events started. It denotes that it was the time that people are still writing on the walls and on the rocks.
<span>1.They awarded the medal to the hero.
Preposition: to the hero
Object of the preposition: hero
2.The pirates buried the treasure inside the cave.
</span>Preposition: inside the cave
Object of the preposition: cave
<span>
3.Joan is the owner of the expensive necklace.
</span>Preposition: of the expensive necklace
Object of the preposition: necklace
<span>
4.Within the hour I will finish my homework.
</span>Preposition: within the hour
Object of the preposition: hour<span>
5.My cottage is behind the house.
</span>Preposition: behind the house
Object of the preposition: house