The correct answer to this open question is the following.
Unfortunately, you did not attach the chart showing the Columbian Exchange. So as you forgot to include it, we do not know what is the information included in ypur chart.
However, trying to help you, we can say the following.
The three items on the list that I think were the most beneficial to the Americas (New World) were the following.
1.- Livestock. European nations exported to the Americas, livestock such as pigs, cows, horses, sheep.
2.- Grains. These European nations exported grains such as barley, rice, wheat, among others.
3.- Diseases. Unfortunately, part of this Columbian exchange was the many diseases European people brought to the Americas that almost wiped out 80 percent of the Native American Indians, Mesoamerican Indians, and Indians in South America. We are talking about diseases such as Malaria, smallpox, cholera, chickenpox, and influenza.
