Select the correct option for biological names.

Options

A. They are binomial.
B. They are descriptive.
C. They are universal.
D. All of these

Explanation

To solve the question regarding the characteristics of biological names, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding Biological Names**: Biological names refer to the scientific names of organisms, which are composed of two parts: the generic name (genus) and the specific epithet (species).

2. **Identifying the Components**:
- The **generic name** indicates the genus to which the organism belongs.
- The **specific epithet** indicates the species of the organism.

3. **Binomial Nomenclature**: Since biological names consist of two components (genus and species), they are referred to as **binomial** names. This is a key characteristic.

4. **Descriptive Nature**: Biological names often describe characteristics of the organisms. For example, they may refer to a notable feature or habitat of the organism, making them **descriptive**.

5. **Universality**: Biological names are recognized globally, regardless of the language spoken in different regions. This makes them **universal**, as they provide a standard naming system for scientists worldwide.

6. **Conclusion**: Based on the characteristics discussed:
- Biological names are **binomial** (two parts).
- They are **descriptive** (they describe characteristics).
- They are **universal** (valid across the world).

7. **Correct Option**: Therefore, the correct option that encompasses all these characteristics is **"all of these"**.

### Final Answer:
The correct option is **all of these** (they are binomial, descriptive, and universal).

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