A carnivrous dinosaur was

Options

A. Tyrannosaurus
B. Brontosourus
C. Stegosaurus
D. All the above

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks for a carnivorous dinosaur among the given options: Tyrannosaurus, Brontosaurus, Stegosaurus, and "all of the above."

2. **Evaluate Each Option**:
- **Option A: Tyrannosaurus**: This dinosaur, commonly known as T-Rex, is one of the largest carnivorous dinosaurs. It existed during the Cretaceous period and is well-known for its predatory nature.
- **Option B: Brontosaurus**: This dinosaur is characterized by its long neck and small head. It is a herbivore, meaning it primarily ate plants, not meat.
- **Option C: Stegosaurus**: Similar to the Brontosaurus, the Stegosaurus is also a herbivorous dinosaur. It is recognized for its distinctive plates and spikes but does not eat meat.
- **Option D: All of the above**: This option suggests that all the listed dinosaurs are carnivorous, which is incorrect based on the evaluations of options B and C.

3. **Conclusion**: After evaluating each option, it is clear that only the Tyrannosaurus is a carnivorous dinosaur. Therefore, the correct answer is **Option A: Tyrannosaurus**.

---