## Core Concept
The treatment of morphine dependence involves medications that help manage withdrawal symptoms, cravings, and relapse prevention. The primary goal is to reduce the physical and psychological dependence on opioids.

## Why the Correct Answer is Right
Buprenorphine is a partial opioid agonist used in the treatment of opioid dependence. It helps alleviate withdrawal symptoms and reduces cravings. Methadone, another opioid agonist, is also used for similar purposes. Clonidine, an alpha-2 adrenergic agonist, can help manage withdrawal symptoms such as hypertension and tachycardia. Disulfiram, however, is not used for opioid dependence; it is used in the treatment of chronic alcoholism by producing an acute sensitivity to ethanol.

## Why Each Wrong Option is Incorrect
* **Option A: Buprenorphine** is incorrect because it is indeed used for the treatment of morphine dependence.
* **Option C: Clonidine** is incorrect because it is used to manage certain withdrawal symptoms.
* **Option D: Methadone** is incorrect because it is a well-established treatment for opioid dependence.

## Clinical Pearl / High-Yield Fact
A key point to remember is that Disulfiram is specifically used for treating alcohol dependence and works by inhibiting aldehyde dehydrogenase, leading to unpleasant effects when alcohol is consumed. It's essential to distinguish its use from medications targeting opioid dependence.

## Correct Answer Line
**Correct Answer: B. Disulfiram**