Read the passage below, noting Paine's use of a common image as an analogy.

"That the crown is this overbearing part in the English constitution, needs not be mentioned, and that it derives its whole consequence merely from being the giver of places and pensions, is self-evident, wherefore, though we have been wise enough to shut and lock a door against absolute monarchy, we at the same time have been foolish enough to put the crown in possession of the key."

What fact is Paine's image of a locked door and a key supposed to represent?
a. Parliament's attempt to arrest the king will be unsuccessful.
b. Parliament only pretends to take part in governing England.
c. The king can easily override any constitutional checks on his power.
d. The king is living in a prison of his own making.