Question

read the text.
in july 2014, when africa was experiencing a devastating outbreak of the deadly ebola virus, doctors identified the first ebola case in nigeria. officials worried that ebola would quickly spread in nigeria, but within three months, health officials had defeated the disease inside nigerias borders. because ebola spreads through direct contact with an infected person, nigerian medical personnel immediately tracked down everyone who had been in contact with the infected patient. more than one hundred and fifty workers conducted 18,500 interviews to identify everyone who might have been exposed to ebola. the medical personnel monitored these contacts, isolating and treating anyone who showed signs of the disease. these tactics succeeded, and nigeria was declared free of ebola in october.
which organizational structure does this text primarily use?
compare - contrast
problem - solution

Explanation:

The text first presents the problem of Ebola entering Nigeria and the risk of widespread spread. It then details the solutions implemented by health officials: tracking contacts, conducting interviews, monitoring, isolating, and treating cases, which led to Nigeria being declared Ebola-free. This follows a problem-solution structure, not compare-contrast (no two items are compared).

Answer:

problem-solution