**Core Concept**
The question tests the understanding of opioid withdrawal symptoms, which occur when an individual abruptly stops or significantly reduces their opioid intake. Opioid withdrawal is characterized by a complex set of physiological and psychological symptoms that can be distressing for the patient.

**Why the Correct Answer is Right**
Heroin is an opioid, and its withdrawal symptoms are classic and well-documented in medical literature. The symptoms described, such as increased sweating, lacrimation, diarrhea, yawning, and rhinorrhea, are characteristic of opioid withdrawal. These symptoms occur due to the body's adaptation to the constant presence of opioids, which leads to changes in the opioid receptors and the body's response to them. When opioids are withdrawn, the body's response is to try to readjust, resulting in these withdrawal symptoms.

**Why Each Wrong Option is Incorrect**
**Option B:** Cocaine is a stimulant, and its withdrawal symptoms are different from those of opioids. Cocaine withdrawal is characterized by depression, anxiety, fatigue, and intense cravings for the drug.
**Option C:** Cannabis withdrawal is also distinct from opioid withdrawal. Cannabis withdrawal symptoms include irritability, mood and sleep difficulties, decreased appetite, cravings, and restlessness.
**Option D:** Alcohol withdrawal symptoms are more severe and can include seizures, delirium tremens, and even death in severe cases. The symptoms described in the question do not match those of alcohol withdrawal.

**Clinical Pearl / High-Yield Fact**
It's essential to recognize the different withdrawal symptoms of various substances to provide appropriate treatment and support to patients. Opioid withdrawal can be managed with medications like methadone or buprenorphine, whereas other substance withdrawal may require different approaches.

**✓ Correct Answer: A. Heroin**