Choose the word or phrase below that best completes the following statement: Malignant tumor cells do not wear out and die as normal cells do, but instead they __________.
A. become immortal and proliferate indefinitely
B. grow rapidly and transform the tissue around them
C. must be killed by high-level immune response
D. die only when they have achieved dominance in the tissue that formed them originally
Question 2
How often should a woman perform a breast self-examination?
A. Daily
B. Weekly
C. Monthly
D. Every 6 months
