According to Darwin during the struggle for existence, these organisms alone will survive

Options

A. Organisms with discontinuous variations
B. Organisms with acquired variations
C. Organisms with useless variations
D. Organisms with beneficial variations

Answer

**Step-by-Step Solution:**

1. **Understanding Darwin's Theory**:
- Charles Darwin proposed the theory of natural selection, which explains how evolution occurs. According to this theory, organisms that are better adapted to their environment are more likely to survive and reproduce.

2. **Struggle for Existence**:
- Darwin emphasized the concept of "struggle for existence," which refers to the competition among organisms for limited resources such as food, space, and mates. This struggle leads to natural selection.

3. **Analyzing the Options**:
- **Organism with Discontinuous Variation**: This refers to traits that have distinct categories with no intermediate forms. While these traits can be advantageous, they do not necessarily guarantee survival.
- **Organism with Wide Variation**: This implies a broad range of traits within a species. While variation can be beneficial, it does not specify that these variations are advantageous.
- **Organism with Useless Variation**: Variations that do not provide any advantage or benefit to survival would not help an organism thrive in a competitive environment.
- **Organism with Beneficial Variation**: This refers to traits that enhance an organism's ability to survive and reproduce in its environment. These variations are advantageous and increase the chances of survival.

4. **Conclusion**:
- According to Darwin's theory, during the struggle for existence, the organisms that will survive are those with beneficial variations. These adaptations allow them to better cope with environmental challenges and compete effectively for resources.

5. **Final Answer**:
- The correct answer is **D) Organism with beneficial variation**.

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