The correct answer is option (c) - (a), (b), and (c).

In Buddhism, there are several important beliefs. The first belief is that the world is filled with sorrows, which means that suffering is an inherent part of human existence. The second belief is that people suffer because of their desires. According to Buddhism, desires lead to attachment and clinging, which ultimately leads to suffering. The third belief is that if desires are conquered and let go, one can attain nirvana, which is a state of liberation and freedom from suffering. It is important to note that Buddhism does not recognize the existence of a deity or a soul, so option (d) is incorrect.