Can't is the word that is foe to ambition,
an enemy ambushed to shatter your will;
its prey is forever the man with a mission
and bows but to courage and patience and skill.

the first line above uses the phrase "foe to ambition ".what is a "foe to ambition "?

a-a friend who you finish a job
b-a person who gives up on a task
c-an enemy who works against your goals
d-a person fighting to overcome a bad habit