**Question:** Paedophile is having anal intercourse with -

A. a child
B. an adult
C. a teenager
D. a young adult

**Correct Answer:** C. a teenager

**Core Concept:**
Paedophilia is a sexual disorder characterized by a persistent and intense sexual attraction to prepubescent children (those under 13 years old). In this context, the correct answer is a teenager as they are considered prepubescent and are legally considered minors. Adults, young adults, and children are not considered appropriate sexual partners for adults with paedophilic tendencies.

**Why the Correct Answer is Right:**
Paedophilia is a psychiatric disorder classified under the Diagnostic and Statistical Manual of Mental Disorders (DSM) and International Classification of Diseases (ICD). In this context, a teenager falls under the category of prepubescent individuals, who are typically under the age of 13 years old. Engaging in sexual activities with a teenager can lead to legal consequences and is considered inappropriate due to the mismatch between the ages of the perpetrator and the victim.

**Why Each Wrong Option is Incorrect:**

A. A child is even younger than a teenager and is usually under the age of 12 years old. Engaging in sexual activities with a child is illegal and extremely harmful to the child's wellbeing.

B. An adult is generally considered to be someone over the age of 18 years old. Engaging in sexual activities with an adult is not relevant to the question as it does not address the age disparity between the perpetrator and the victim.

D. A young adult is someone between the ages of 18 and 25 years old, which is not relevant to the question as it does not address the age difference between the individual with paedophilic tendencies and the victim.

**Clinical Pearl:**
Understanding the legal and ethical implications of engaging in sexual activities with individuals of different ages is crucial for healthcare professionals and the general public. Engaging in sexual activities with a teenager or a child can lead to severe legal consequences and is highly inappropriate due to the age disparity and potential harm to the victim. It is essential to be aware of these issues when discussing paedophilia and other psychiatric disorders involving sexual attraction to prepubescent individuals.