**Core Concept**
The father of modern toxicology is credited to **Jean-Baptiste Pater** (commonly known as **Henri Orfila**), who established toxicology as a scientific discipline through systematic experimentation and legal application of toxic principles.

**Why the Correct Answer is Right**
Henri Orfila, a French chemist and physician, is widely recognized as the **father of modern toxicology**. In the 19th century, he pioneered the use of chemistry to study poisonings, developed standardized methods for detecting toxins, and authored the first comprehensive textbook on toxicology, *Traité de la toxicologie* (1830). His work laid the foundation for forensic toxicology by linking chemical analysis to legal investigations, establishing principles like the **"dose-response relationship"** and **"toxicity thresholds"**.

**Why Each Wrong Option is Incorrect**
Option A: Paracelsus is often credited with early ideas on toxicology, such as "the dose makes the poison," but he did not systematize or establish toxicology as a science.
Option B: Galton is known for his work in **eugenics and statistics**, not toxicology.
Option D: Guftason is a misspelled or fictional name; no prominent figure in toxicology bears this name.

**Clinical Pearl / High-Yield Fact**
Orfila’s work established that **toxicology is a science of dose, not just presence of a substance**, and that **poisoning must be proven through chemical analysis** — a cornerstone of forensic medicine.

✓ Correct Answer: C. Orfila