Source traits are

A) derived from surface traits.
B) the basic elements of personality.
C) unstable and impermanent.
D) syndromes in an abnormal personality.

Source traits are the basic elements of personality, which serve as the building blocks for surface traits. They are relatively stable and enduring over time, and represent the underlying dimensions that capture the variations in personality that exist between individuals. Option A is incorrect because surface traits are derived from source traits, not the other way around. Option C is incorrect because source traits are actually quite stable and enduring. Option D is incorrect because source traits are not specific to abnormal personality, but rather represent the underlying structure of normal personality as well.