Critical thinking can best be defined as

A) the careful evaluation of evidence for and against any conclusion.
B) the process by which one compares a goal with the means to achieve that goal.
C) the ability to think in unique and novel ways.
D) the learning which takes place after preattention.

Critical thinking involves carefully evaluating evidence and arguments to determine the strength of a conclusion. It requires an analytical and logical approach to problem-solving, rather than relying on intuition or assumptions. Choice B is more closely related to the concept of goal-setting and planning, while Choice C refers to creativity and innovation. Choice D is not a recognized term in the field of critical thinking.