**Core Concept:**
The cessation experiment is a pharmacological technique used to study the withdrawal effects of a drug when it is abruptly stopped or reduced in dosage in an animal model or human subject. This helps in understanding the dependence, tolerance, and withdrawal syndromes associated with drug use.

**Why the Correct Answer is Right:**
The correct answer, B (withdrawal syndrome), is chosen because a withdrawal syndrome is the expected outcome when a drug with addictive properties is abruptly stopped or reduced in dosage. This can lead to various physiological and psychological symptoms, depending on the drug and its effect on the central nervous system and other organ systems.

**Why Each Wrong Option is Incorrect:**
A) Cessation experiment does not specifically refer to studying the withdrawal effects, but rather the complete cessation of drug administration.
C) Withdrawal syndrome is not a type of cessation experiment, but rather the outcome of a cessation experiment.
D) Cessation experiment does not involve studying the effects of reducing the dosage of a drug; it typically involves complete discontinuation.

**Clinical Pearl / High-Yield Fact:**
Understanding withdrawal syndromes is essential for clinical practice as they can lead to severe complications and help in developing evidence-based treatment strategies for patients with substance use disorders.

**Correct Answer:** B. Withdrawal Syndrome