Final answer:
The number of people infected with AIDS and those who died of AIDS in Botswana between 2003 and 2007 decreased. Hence, the correct answer is c. decreased.
Step-by-step explanation:
Beth and Jena worked the following problem on a math test: Between 2003 and 2007, the number of people infected with AIDS and the number of people who died of AIDS in Botswana decreased. According to the information provided, the number of people newly infected declined globally, and antiretroviral treatments led to a reduction in deaths. Despite this decline in new infections and deaths, the overall number of individuals living with HIV increased due to longer survival rates enabled by these treatments. Hence, the correct answer is c. decreased.