## **Core Concept**
The question pertains to the psychoanalytic theory of personality structure proposed by Sigmund Freud, which includes the **id**, **ego**, and **superego**. These components interact to influence an individual's behavior and personality.

## **Why the Correct Answer is Right**
The correct answer relates to the accurate description of Freud's psychoanalytic theory components:
- **Id**: The primitive and instinctual part of the mind that contains sexual and aggressive drives and hidden memories, the super-ego operates as a morality.
- **Ego**: The realistic and logical part of the personality that mediates between the desires of the id and the super-ego.
- **Superego**: Incorporates the values and morals of society, and works to inhibit the impulses of the id.

## **Why Each Wrong Option is Incorrect**
- **Option A:** Id is indeed considered the reservoir of instincts and drives, making this statement correct and not the answer we're looking for.
- **Option B:** The ego is accurately described as the executive organ of the id, helping to mediate between the id's desires and reality, so this is correct.
- **Option C:** The superego does offer approval and disapproval but saying it "predominantly consciously" does this might be misleading because the superego operates both consciously and unconsciously.
- **Option D:** Consciousness isn't a common component in the traditional sense across all three; the id is entirely unconscious, the ego is conscious and unconscious, and the superego is both conscious and unconscious.
- **Option E:** The id indeed works on the pleasure principle, seeking immediate gratification.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the **id**, **ego**, and **superego** are not physical entities but rather psychological concepts. The **id** operates on the **pleasure principle**, the **ego** on the **reality principle**, and the **superego** incorporates societal and moral values.

## **Correct Answer:** D. Conscious is common component of id, ego & super ego