Final answer:
Denial is the defense mechanism where an individual refuses to acknowledge some aspect of objective reality or subjective experience that is apparent to others.
Explanation:
Option: A
Denial is the defense mechanism where an individual refuses to acknowledge some aspect of objective reality or subjective experience that is apparent to others.
It involves blocking out or rejecting information or events that are too uncomfortable to accept.
An example of denial is someone refusing to believe that they have a serious illness, even in the face of medical evidence.