I'm not sure what you mean by 'the good', but at a guess:
1. Particular, see part 2:
2. Very dependent, the right situation could make pretty much everything the 'good' option. There's never any one real answer unless the terms are discrete, which is more or less in mathematics alone, not morality.
3. Not sure what you mean by this. It's possible to argue that no action is wholly good, but in any case, it's severely limited. Personally, I'm a bit of a moral relativist so I can't give very representative answers, but the best a human can do is to be 'not bad'. Helpful acts, sometimes seen as good, rob of experience and practise, and things like keeping out of the way, etc, would be just as easily achieved by not existing.
4. The inherent social instinct, reciprocation, friendship, enjoyment...
5. Selfishness, reciprocation.
Disproving the Bible in a signature:
Revelations 22:18 ...If any man shall add unto these things, God shall add unto him the plagues that are written in this book
Revelations 23:1 And God said 'hi'.
(I'm still fine)