What it means is that he wouldn't have been able to get where he got if it hadn't been for the scientific achievements of his predecessors. If it hadn't been for these "giants" that enabled him to see so far, he wouldn't have been able to make all the discoveries that he did. For those coming after him, he was a giant that enabled them, and so laws and theories and scientific knowledge always increases based on the knowledge before it.
Percy, Annabeth, and Grover are good friends. They trust each other and respect each other. Each one would lay down his or her life to save the other.
c, roofs as the other answers are not correct
OC is the correct option i belive
Answer:

Did you know lying is unhealthy for you? That's right! Lying is an excuse for some of the worst things people try to hide although they are obvious. Everytime you lie, you've already lied to yourself about it even being right to tell that lie. What can you do to avoid telling lies? If it's a lie, keep it to yourself. If it's a good lie, say it. It's safe to tell lies for good reason, but always try to be truthful, and make the wise choice.