Which of the following will be least adversely affected by predation ?

Options

A. Grass
B. Rabbit
C. Deer
D. Lion

Answer

To determine which of the given options is least adversely affected by predation, we need to analyze each option in terms of their position in the food chain and their vulnerability to being preyed upon.

### Step-by-Step Solution:

1. **Understanding Predation**:
- Predation is a biological interaction where one organism (the predator) kills and eats another organism (the prey). The impact of predation varies among different organisms based on their roles in the ecosystem.

2. **Analyzing the Options**:
- **Grass**: Grass is a primary producer and is consumed by herbivores like rabbits and deer. It does not have any natural predators that consume it, so it is not adversely affected by predation.
- **Rabbit**: Rabbits are herbivores and are preyed upon by various predators, including foxes and birds of prey. They are significantly affected by predation.
- **Deer**: Deer are also herbivores and are preyed upon by larger predators like wolves and lions. They are adversely affected by predation as well.
- **Lion**: Lions are apex predators and primarily hunt other animals for food. They are at the top of the food chain and are least affected by predation since they do not have natural predators.

3. **Conclusion**:
- Among the options, **Grass** is not adversely affected by predation as it is a producer and does not get eaten by other organisms. However, since the question asks for the organism least adversely affected by predation in terms of being preyed upon, the **Lion** is the correct answer as it is at the top of the food chain and has no natural predators.

### Final Answer:
- The organism least adversely affected by predation is **Lion**.