The question is incomplete and the full version can be found online.
Answer: two-track mind
Step-by-step explanation:
Modern cognitive researchers have found that humans have a two-track mind, meaning that there´s conscious information processing that allows us to have control over our mental state and communicate it to others, and unconscious processing, which happens at the same time on multiple parallel tracks.
The other options proposed are incorrect because they don´t reference the process involving both the conscious and unconscious mind stated in the sentence.
A schema refers to the cognitive framework that allows us to organize and interpret information. A defense mechanism is a process triggered unconsciously to protect us from anxiety-inducing situations.
And the collective unconscious refers to a form of the unconscious shared by all mankind through the inherited structure of the brain.