Modern public health depends heavily on accurate disease surveillance. Without timely data on where infections are emerging, even the most advanced treatments can fail to reach the populations who need them. The 2014 Ebola outbreak in West Africa, for example, accelerated in part because case counts initially lagged the actual spread of the virus.
Which choice best describes the function of the third sentence in the text?
- A
It contradicts the claim made in the first sentence.
- Bcheck_circle
It illustrates the consequence described in the second sentence with a specific historical case.
- C
It introduces a new disease unrelated to surveillance.
- D
It defines the term 'public health'.
Explanation
The Ebola example concretizes the second sentence's general consequence. B is correct.