Please help me I’m begging you!

D. or A.

Explanation:

For D: If you did study, you would have realized that Christopher Columbus never achieved his main goal.

For A: They never did achieve that.

answer; i believe that the correct answer is (agriculture);

so they can differentiate themselves from others as they saw themselves as the superior race. the star was basically a symbol that meant you are a less of a person than i am because of my race. the star was also degrading for those who had to wear it because they were aware of this and the nazis used the notion to make them feel less like a person.