Which sign is best at seeking full advantage if situation is a little favor of them?

"Give them an inch and they'll take a mile" is an old saying that is so true. This is similar to your question. Really, when the odds are in ones favor there is always the possibility that they will take full advantage of that 'inch.'

So really all signs would be prone to take full advantage given the chance. But if I had to choose...

1) Scorpio as they desire full control if at all possible
2) Capricorn as they are very ambitious and can 'step on others' on the way to the top
3) Aries as 'conquest' is their battle cry and will take that inch without a moment's hesitation
4) Leo as they are the Royalty of the Zodiac and feel that they DESERVE any advantage

Those are my choices. Hope this is helpful and good luck and bless you too.

Scorpio
Leo