Which of the following are beliefs of Buddhism? I. The world is full of sorrows. II. People suffer on account of desires. III. If desires are conquered, nirvana will be attained. IV. The existence of God and Soul must be recognised.

The correct answer is C. I, II and III.

Buddhism is a religion that originated in India over 2,500 years ago. It is based on the teachings of Siddhartha Gautama, who is also known as the Buddha. The Buddha taught that the cause of suffering is desire, and that the way to end suffering is to extinguish desire. He also taught that the way to extinguish desire is to follow the Eightfold Path.

The Eightfold Path is a set of eight steps that lead to enlightenment. The steps are:

1. Right understanding
2. Right thought
3. Right speech
4. Right action
5. Right livelihood
6. Right effort
7. Right mindfulness
8. Right concentration

If one follows the Eightfold Path, one will eventually reach nirvana, which is a state of perfect peace and happiness.

The Buddha did not teach that God or a soul exist. He taught that the only thing that exists is suffering, and that the only way to end suffering is to extinguish desire.

Option I is correct because the Buddha taught that the world is full of sorrows.

Option II is correct because the Buddha taught that people suffer on account of desires.

Option III is correct because the Buddha taught that if desires are conquered, nirvana will be attained.

Option IV is incorrect because the Buddha did not teach that God or a soul exist.