Okay, let's tackle this question about obsessive compulsive disorder (OCD) in psychoanalytic terms. The question is asking which stage of psychosexual development OCD is fixed at. First, I need to recall Freud's stages of psychosexual development. There are five stages: oral, anal, phallic, latency, and genital.

OCD is characterized by intrusive thoughts (obsessions) and repetitive behaviors (compulsions). From a psychoanalytic perspective, fixation at a particular stage leads to specific personality traits. The phallic stage is where the Oedipus complex occurs, but that's more about gender identity and conflict. The anal stage is associated with issues around control and retention, like being too neat or messy. The oral stage relates to dependency and oral fixations like smoking or overeating.

Wait, OCD is often linked to the anal stage because the conflict there is about holding on versus letting go. If someone is fixated here, they might develop traits like being overly controlling, meticulous, or rigid—traits that align with OCD symptoms. The phallic stage is more about the Oedipus complex and issues related to genitalia, which doesn't seem to fit OCD as directly. The latency stage is about suppressing sexual impulses, and the genital stage is the mature stage. So, the correct answer should be the anal stage. Let me verify this. Yes, in psychoanalytic theory, anal fixation is associated with obsessive-compulsive traits due to the emphasis on control and order during that stage.

**Core Concept**
Psychoanalytic theory associates obsessive-compulsive disorder (OCD) with fixation at the **anal stage** of psychosexual development. This stage (ages 1.5–3 years) involves conflicts around toilet training, fostering traits like control, orderliness, or stubbornness when fixated.

**Why the Correct Answer is Right**
Fixation at the anal stage leads to a "anal-retentive" personality, characterized by excessive need for control, rigidity, and perfectionism—traits overlapping with OCD symptoms. Freud posited that unresolved anal stage conflicts result in compulsive behaviors as attempts to regain mastery over anxiety. The anal stage’s focus on retention vs. elimination mirrors OCD’s preoccupation with contamination or symmetry.

**Why Each Wrong Option is Incorrect**
**Option A:** *Oral stage* fixations relate to dependency or oral habits (e.g., smoking), not OCD.
**Option B:** *Phallic stage* fixations involve Oedipal conflicts and genital concerns, not compulsive behaviors.
**Option C:** *Latency stage* involves suppressed sexuality; fixation here leads to social withdrawal, not OCD.

**Clinical Pearl / High-Yield Fact**
Remember: "Anal = Analytical" (perfectionism) and "Obsessive = Orderly" (control). Freud’s stages are frequently tested in psychopathology questions—link fixation traits to specific developmental stages.

**Correct Answer: C. Anal stage**

✓ Correct Answer: D. Anal stage