Final answer:
The compute software for applied epidemiology was developed in the 1990s at the CDC.
Step-by-step explanation:
The compute software for applied epidemiology was developed at the CDC in the 1990s. According to the timeline provided, the CDC can be seen using a computer in the mid to late 1980s, which suggests that the software development likely occurred shortly after that. So, the correct answer is 1990s.