Answer:
[T]he light moved away from Lemon Brown, but not before Greg saw him hurl his body down the stairs at the men who had come to take his treasure.
Explanation:
The answer since Lemon was trying to hide away from the thugs who had came to take his treasure. It was later that, he whispered to Greg that they are bad men unlike the previous time when he was in good rapport with those men. For him to attack them first before the saw him shows that, the relationship between him and them has changed drastically.
The jungle makes them turn from civilized boys to savage beasts. For example, the boys, especially Ralph and Piggy, immediately attempt to create a system of order on the island, reminiscent of their lives in British society. However, the boys' animal like and primal instincts are brought out by the harshness of the jungle. Examples of this include when the boys kill the pig brutally, when they kill Piggy and Simon in their rage, and when they attempt to kill Ralph. Jack is the ringleader of the brutality, but the majority of the other boys, save Piggy and Ralph, and partially Samneric, become savage as well.