Freud believed that certain troubling symptoms could be traced to painful unconscious memories. This led him to suspect that these symptoms resulted from: A) genetic defects.
B) an inferiority complex.
C) psychological processes.
D) unconditional positive regard.

This led him to suspect that these symptoms resulted from:

C) psychological processes.

Explanation:

In his theories and studies, Sigmund Freud came to the conclusion that the unconscious mind is responsible for most of our behaviors. Like the submerged part of an iceberg, the unconscious mind is immense in its importance and influence over us. It is the home of mental processes that influence our actions, judgments, and feelings, but it cannot be accessed by us - at least, not easily. Our past experiences and painful memories are stored in the unconscious mind and have the power to cause troubling symptoms through psychological processes that are incomprehensible from a conscious perspective.