Each and every organism can live only for a certain period of time. The period from birth to the natural death of an organism represents its

Options

A. Asexual reproduction
B. Sexual reproduction
C. Development
D. Life span

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the term that describes the period from the birth of an organism to its natural death.

2. **Identifying the Options**: The options provided are:
- A) Asexual reproduction
- B) Sexual reproduction
- C) Development
- D) Lifespan

3. **Analyzing Each Option**:
- **Asexual Reproduction**: This is a type of reproduction that does not involve the fusion of gametes and typically results in offspring that are genetically identical to the parent. It does not describe the period of an organism's life.
- **Sexual Reproduction**: This involves the fusion of male and female gametes, resulting in genetic variation. While it is a method of reproduction, it does not define the lifespan of an organism.
- **Development**: This refers to the process of growth and changes an organism undergoes throughout its life. It is related to the changes within an organism but does not specifically define the time from birth to death.
- **Lifespan**: This term specifically refers to the duration of time an organism lives, from birth to natural death.

4. **Selecting the Correct Answer**: Based on the analysis, the correct answer is D) Lifespan, as it directly corresponds to the period from birth to natural death of an organism.

5. **Conclusion**: The period from birth to the natural death of an organism is known as its lifespan.

---