Answer:
Not necessary but sufficient
Explanation:
All the three predictors of cancer can be causative agents for the disease. Hence, if any of these are present, it may trigger cancerous cell production. The mechanism of causing cancer in all these elements is different and they does not complement each other. Benzene is a toxic chemical which upon continuous inhalation cause cancer. Genetic mutation may serve as a hereditary risk factor to abnormal and diseased cell production. Similarly, high radiation dose may also trigger rapid production of cancerous cells.