1. A. dynamic clonal diversification 2. B. far superior in long-term survival rates relative to \'older\' chemotherapy drugs 3. c. it is very leaky and poorly structured, having many loops and dead ends. 4. a. natural killer cells recognize antibody-bound cells and kill them 5. B. exposure to environmental carcinogens leading to higher prevalence Solution 1. A. dynamic clonal diversification 2. B. far superior in long-term survival rates relative to \'older\' chemotherapy drugs 3. c. it is very leaky and poorly structured, having many loops and dead ends. 4. a. natural killer cells recognize antibody-bound cells and kill them 5. B. exposure to environmental carcinogens leading to higher prevalence.