Answer : mixed nuts
Explanation: it is healthy
The answer to this item is unconscious mind. Although Freud was not responsible for the determination of conscious and unconscious, he for certain made it popular. According to him, unconscious mind is that which is not accessible by our conscious mind but affects the way a person thinks, acts, or behaves.
If I recall correctly from my World History days, then it is D.
The answer would be A, a diamond. Isn't it cool it's shaped like a diamond? =)