Option a is the correct answer. The correct order of the Four Noble Truths is: There is suffering (dukkha)- This truth states that all life is characterized by suffering. Suffering can be physical, mental, or emotional. It can be caused by many things, such as illness, old age, death, and separation from loved ones. There is a cause of suffering (samudaya)- This truth states that the cause of suffering is craving (tanha). Craving is the desire for things that we do not have, or the desire to hold on to things that we do have. There is an end to suffering (nirodha)- This truth states that there is an end to suffering. The end of suffering is achieved through the cessation of craving. There is a path leading to the end of suffering (magga)This truth states that there is a path that leads to the cessation of craving and the end of suffering. This path is called the Noble Eightfold Path.