Density, here indicates being high in number. so, if the no. of same species becomes high in a national park they will compete for the resources and this will lead to intraspecific competition.

Intraspecific competition refers to the competition between individuals of the same species for limited resources such as food, water, territory, or mates. When there is a high density of a protected animal in a National Park, it can lead to intraspecific competition among the individuals of that species. This is the correct answer to the given question.

Explanation:
1. High Density of Protected Animal:
- When there is a high density of a protected animal in a National Park, it means that there is a large population of that particular species within a confined area.
- This could happen due to factors such as favorable environmental conditions, availability of resources, or conservation efforts.

2. Intraspecific Competition:
- Intraspecific competition occurs when individuals of the same species compete for limited resources.
- In the context of the National Park, the protected animals would compete for resources like food, water, and territory.
- The competition arises because the resources are limited and cannot support an unlimited number of individuals.

3. Effects of Intraspecific Competition:
- Intraspecific competition can have several effects on the population of protected animals:
- Increased competition for food: As the population density increases, there will be more individuals competing for the available food resources. This can lead to food scarcity and malnutrition among the animals.
- Territory disputes: Animals may engage in aggressive behaviors to defend their territory, leading to conflicts and potential injuries.
- Increased stress levels: High competition levels can result in increased stress levels among the animals, which can have negative impacts on their health and reproductive success.
- Reduced reproductive success: Intraspecific competition can lead to reduced reproductive success as individuals may struggle to find mates or suitable breeding territories.
- Increased mortality rates: In severe cases of competition, some individuals may not be able to access enough resources to survive, leading to increased mortality rates within the population.

4. Conclusion:
- In conclusion, a high density of a protected animal in a National Park can result in intraspecific competition.
- This competition arises due to limited resources and can have various negative effects on the population, including reduced food availability, territorial disputes, increased stress, reduced reproductive success, and increased mortality rates.