Right answer is B because a virus outside the body is non- living but when it enters into the body it becomes living

Explanation:

Viruses cannot be classified as either living or non-living microorganisms because they do not have the characteristics of a living organism and cannot carry out essential life processes on their own. Here's why:

1. Structure:
- Viruses are extremely small and simple compared to other microorganisms.
- They are composed of genetic material (DNA or RNA) surrounded by a protein coat called a capsid.
- Some viruses may also have an outer envelope made up of lipids.

2. Reproduction:
- Viruses cannot reproduce on their own.
- They need to invade a host cell and use its machinery to replicate themselves.
- Once inside the host cell, the virus takes over the cell's resources and instructs it to produce more viruses.
- The new viruses are then released, often destroying the host cell in the process.

3. Metabolism:
- Viruses do not have a metabolism of their own.
- They do not carry out any metabolic processes such as respiration, growth, or digestion.
- They do not require energy or nutrients to survive.

4. Response to Stimuli:
- Viruses do not respond to stimuli from their environment.
- They lack the ability to move, grow, or adapt to changes in their surroundings.
- They are completely dependent on host cells for their survival and reproduction.

5. Evolution:
- Viruses are considered to be between living and non-living entities because they possess genetic material and can evolve over time.
- However, their inability to carry out life processes independently excludes them from being classified as living organisms.

Conclusion:
In summary, viruses are considered as non-living microorganisms because they lack the characteristics of a living organism. They cannot carry out essential life processes on their own, reproduce independently, or respond to stimuli. Viruses are reliant on host cells for survival and replication.