Which of the following statement is true?

Options

A. Animal cells possess a cell wall.
B. Animals are unicellular eukaryotes.
C. Animals require oxygen for aerobic respiration.
D. All are correct

Answer

To determine which statement is true among the provided options, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Analyze Option 1**:
- Statement: "Animal cell possesses a cell wall."
- Explanation: This statement is **incorrect** because animal cells do not have a cell wall. Instead, they have a plasma membrane. Cell walls are found in plant cells and some fungi, but not in animal cells.

2. **Analyze Option 2**:
- Statement: "Animals are unicellular eukaryotes."
- Explanation: This statement is also **incorrect**. Animals are multicellular organisms, meaning they are made up of many cells. While animal cells are indeed eukaryotic, the statement incorrectly categorizes animals as unicellular.

3. **Analyze Option 3**:
- Statement: "Animals require oxygen for aerobic respiration."
- Explanation: This statement is **correct**. Animals perform aerobic respiration, which requires oxygen to produce energy. In contrast, anaerobic respiration occurs in the absence of oxygen.

4. **Analyze Option 4**:
- Statement: "All are correct."
- Explanation: This statement is **incorrect** because we have already established that Options 1 and 2 are incorrect. Therefore, not all statements can be correct.

### Conclusion:
After analyzing all the options, we find that **Option 3** is the only true statement: "Animals require oxygen for aerobic respiration."

---