In Liberia, the poor neighborhoods helped Ebola thrive in Liberia. The people in the poor neighborhoods had many social interactions, poor water quality levels, little or no access to healthcare, barely any sanitation, and poor infrastructures. The lower class often had more cases in Ebola, unlike the upper classes. I hope this answer helped.
The correct answer is D. ocean floor mapping and earthquake tracking
Tracking earthquakes is helpful because it shows where it came from and what caused it, as well as how it affected the environment, while ocean floor mapping is useful because it shows how the bottom of the sea changed over time which happens due to tectonic activity.
Slow Growth should be the correct answer