Answer:
A story about a doctor who tracks and treats the outbreak of a virus.
Explanation:
This is the most likely answer to the question. In this passage, we see that the doctor and the reporter are talking about the likelihood of an epidemic. The doctor states that the prevalence of international travel makes pandemics more likely. Therefore, the story that we decide to write has to be related in some way to epidemics and the impact that international travel has on them. Option B is the one that would best address these concerns.
Remove! extraneous means irrelevent
the correct conjunction is "which"
