**Approximate Weight of an Adult Elephant**

An adult elephant is one of the largest land animals on Earth. They are known for their enormous size and weight. The correct answer to the question is option 'C', which is 5000 kg. Let's understand why this is the approximate weight of an adult elephant.

**Elephant Species and Size Variations**
- There are three main species of elephants: African bush elephants, African forest elephants, and Asian elephants.
- African bush elephants are the largest among the three species, followed by African forest elephants and then Asian elephants.
- Adult male African bush elephants can grow up to 3.3 meters (10.8 feet) tall at the shoulder and weigh around 6000 kg to 7000 kg (13,000 to 15,400 pounds).
- Adult female African bush elephants are slightly smaller, typically weighing around 4000 kg to 6000 kg (8,800 to 13,200 pounds).
- African forest elephants are smaller than African bush elephants, with adult males weighing around 2700 kg to 6000 kg (6,000 to 13,200 pounds) and adult females weighing around 2200 kg to 3000 kg (4,850 to 6,600 pounds).
- Asian elephants are generally smaller than African elephants, with adult males weighing around 3000 kg to 5000 kg (6,600 to 11,000 pounds) and adult females weighing around 2000 kg to 3000 kg (4,400 to 6,600 pounds).

**Average Weight and Variations**
- Since the question does not specify the species of the adult elephant, we can consider the average weight of an adult elephant, which would fall within the range of the species mentioned above.
- Based on the average weights mentioned earlier, an approximate weight of 5000 kg would be a reasonable estimate for an adult elephant.
- It is important to note that individual elephants can vary in weight within their species due to factors such as age, sex, genetics, and overall health.

**Conclusion**
- The approximate weight of an adult elephant is 5000 kg, as stated in option 'C'.
- This estimation takes into account the average weight range of different elephant species, with the understanding that there can be variations based on individual factors.