Choose the component related to frog 

Options

A. Hepatic portal system
B. Renal portal system
C. Sinus venosus, conus arteriosus
D. All

Answer

To solve the question "Choose the component related to frog," we will analyze the options provided and determine which one is correct based on the characteristics of frogs.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are:
- A) Hepatic portal system
- B) Renal portal system
- C) Sinus venosus
- D) Onus arteriosus

2. **Understand Frog Classification**: Frogs are amphibians, which means they belong to the class Amphibia. This classification is important as it helps us understand their physiological systems.

3. **Analyze Each Option**:
- **A) Hepatic portal system**: This system is present in frogs. It consists of the hepatic portal vein that carries blood from the digestive organs to the liver. This is essential for processing nutrients.
- **B) Renal portal system**: This system is not present in frogs. The renal portal system is typically found in some other vertebrates, but frogs do not have this system as their kidneys function differently.
- **C) Sinus venosus**: This is a part of the heart found in amphibians, including frogs, but it is not a unique component related to frogs specifically.
- **D) Onus arteriosus**: This term seems to be a misspelling or confusion with "conus arteriosus," which is also part of the frog's heart but not a distinct component related to the frog's unique systems.

4. **Select the Correct Answer**: Based on the analysis, the hepatic portal system is the most relevant component related to frogs. It plays a crucial role in their circulatory system by transporting blood from the digestive organs to the liver.

### Final Answer:
The correct answer is **A) Hepatic portal system**.

---