Who is not alive?

Options

A. Bacteria
B. Virus of Dysentry
C. rose wood
D. Algae

Explanation

To determine which of the given options is not alive, we will analyze each option one by one.

### Step-by-Step Solution:

1. **Identify the Options**: The options provided are:
- A) Bacteria
- B) Virus of dysentery
- C) Rosewood
- D) Algae

2. **Analyze Each Option**:
- **Option A: Bacteria** - Bacteria are single-celled microorganisms that are classified as living organisms. They can reproduce and carry out metabolic processes.
- **Option B: Virus of Dysentery** - Viruses, including the virus that causes dysentery, are considered non-living when outside a host. However, they can replicate inside a host, which complicates their classification. Generally, they are not classified as living organisms.
- **Option C: Rosewood** - Rosewood is a type of tree. It is a living organism because it is made of cells that contain protoplasm, which is essential for life.
- **Option D: Algae** - Algae are also living organisms. They are photosynthetic and can reproduce, thus classified as living.

3. **Conclusion**: Among the options, the virus of dysentery is the one that is not considered alive in the traditional sense, as it cannot carry out life processes independently outside of a host. However, if we strictly consider the options provided, rosewood is a living organism, and thus the correct answer would be the virus of dysentery.

### Final Answer:
**B) Virus of Dysentery**