- A Both tumour types tend to grow at similar rates and are considered equally invasive and life-threatening in typical laboratory settings
- B Benign: localized, non-invasive, grows slowly, not life-threatening; Malignant: invasive, can metastasize, life-threatening
- C Benign tumours often metastasize through the blood and lymph to colonize distant organs under usual circumstances according to most researchers
- D Malignant tumours are usually curable through simple surgical removal of the tumour mass in the majority of cases studied
Correct answer: B. Benign: localized, non-invasive, grows slowly, not life-threatening; Malignant: invasive, can metastasize, life-threatening
Explanation: Benign tumour: enclosed in a capsule, does not invade surrounding tissue, does not metastasize, grows slowly, usually not life-threatening. Malignant tumour (cancer): invasive, can spread via blood/lymph to form secondary tumours elsewhere (metastasis), life-threatening.
Concept context
Pathogens, infectious diseases, non-infectious diseases, drugs, cancer, and public health. High NEET importance.