Barophilic prokaryotic

Options

A. Occur in water containing high concentrations of barium hydroxide
B. Readily grow and divide in sea water enriched in any soluble salt of barium
C. Grow and multiply in very deep marine sediments
D. Grow slowly in highly alkaline frozen lakes at high altitudes

Answer

### Step-by-Step Solution:

1. **Definition of Barophilic Prokaryotic**:
- Barophilic prokaryotes, also known as barophiles, are organisms that thrive in high-pressure environments. These organisms are typically found in deep-sea habitats where the pressure is significantly higher than at sea level.

2. **Habitat**:
- These prokaryotic organisms are primarily located in deep marine sediments. This is because the deep-sea environment provides the necessary high-pressure conditions that barophiles require for growth and reproduction.

3. **Growth Conditions**:
- Barophilic prokaryotes not only require high pressure but can also grow in environments with high pH levels, typically at pH 8.5 and above. This means that they can survive in alkaline conditions, which are often found in certain deep-sea environments.

4. **Correct Statement**:
- Given the information, the correct statement regarding barophilic prokaryotic organisms is that they grow and multiply in very deep marine sediments. This is a key characteristic that distinguishes them from other types of prokaryotes.

5. **Conclusion**:
- Therefore, the answer to the question regarding barophilic prokaryotic organisms is that they thrive in deep marine sediments, which corresponds to option C.