Question

what is a common symptom of cancer?
mitosis
aging
tumors
cytokinesis

Explanation:

Cancer is a disease characterized by the uncontrolled growth of abnormal cells. Mitosis is a normal cell - division process (not a symptom). Aging is a natural process (not a cancer - specific symptom). Cytokinesis is part of cell division (not a symptom). Tumors, which can be benign or malignant (cancerous), are a common manifestation of cancer.

Answer:

tumors