They are formed by subduction
This question is true as well for more help leave a comment on my page and ill get back to you!
For the bottom section I think it goes C B A
The lowland areas of Latin America are very important because of multiple reasons. The majority of the agriculture and farming of animals is taking place in the areas like this, so the food sector is directly connected with them. On top of the agricultural production, these lowlands produce a lot of food on their own. The industries that use as their main material also are directly dependent on these lowlands, as they are mostly covered with numerous types of high quality tropical tree species. There's thousands of species of plants that are used in the medicine, so the pharmacies are also very dependent on them. All in all, these lowlands managed to contribute a lot in the economy, health, and general well being of the Latin American countries.
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.