Rob's backpack weighs five pounds.
16 ounces = 1 pound
80 ounces divided by 16 = 5
5 pounds = 80 ounces
Hey. 10th Grader speaking here. The last time I took an SAT Practice Test, I saw this passage of Frederick Douglass, and this exact question.
Personally speaking, I put 2., but I believe that it's between 2. and 3. You make the choice.
2. because a portion of slavery was removed from the Declaration of Independence, and the Declaration says that all men are "equal"
3. because the U.S Government did not take care of African Americans, and did not pay too much attention to the issue of slavery. Slavery is unethical, so some politicians where trying to say that, while some just ignored it.