Cervical vertebrae in Bradypus are

Options

A. 5
B. 6
C. 8
D. 9

Answer

To determine the number of cervical vertebrae in Bradypus (the three-toed sloth), we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the number of cervical vertebrae in Bradypus, which is a genus of sloths.

2. **Identify the Types of Sloths**: There are two types of sloths: two-toed sloths and three-toed sloths. It is important to differentiate between them as they have different numbers of cervical vertebrae.

3. **Research Cervical Vertebrae Count**:
- Two-toed sloths (genus Choloepus) typically have between 5 to 7 cervical vertebrae.
- Three-toed sloths (genus Bradypus) generally have more cervical vertebrae, ranging from 8 to 9.

4. **Analyze the Options**: The options provided are:
- 1st: 5
- 2nd: 6
- 3rd: 8
- 4th: 9

5. **Eliminate Incorrect Options**:
- Since two-toed sloths have 5 to 7 cervical vertebrae, options 1 (5) and 2 (6) are incorrect for Bradypus.
- Option 3 (8) is a possible count, but we need to check if there is a higher count.
- Option 4 (9) is also a possible count for three-toed sloths.

6. **Conclude the Correct Answer**: Based on the information, the three-toed sloth (Bradypus) has 9 cervical vertebrae, making option 4 the correct answer.

### Final Answer:
The cervical vertebrae in Bradypus are 9.

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