Which of the following is true of cancer?
a. Cancer is a single disease. b. Cancer is the result of gene mutation and uncontrolled cell growth. c. Cancer is the leading cause of death in the United States. d. All of these are true.
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The correct answer is d. All of these are true.
Explanation:
– a. Cancer is a single disease. This statement is somewhat misleading because cancer is a term that refers to many different diseases that involve the uncontrolled growth of abnormal cells. However, it can be simplified to represent various forms of the disease.
– b. Cancer is the result of gene mutation and uncontrolled cell growth. This is true, as most cancers are caused by mutations in genes that regulate cell division and growth.
– c. Cancer is the leading cause of death in the United States. This statement is accurate as cancer often ranks as one of the leading causes of death, following heart disease.
Therefore, since all statements contain elements of truth, the best answer is d. All of these are true.