Hm, I think the question here calls for "d", although d would be better defined as a focus on one's own culture, and ignoring other cultures, or seeing other cultures through the lense of own culture.
In a way, prejudice could be a good lead, but only if it said "prejudice towards all other cultures" which is not really feasible (one can't know all other cultures).
so, still, d is best, although there can be ethnocentrism without feeling superior
It is John Locke who believed that children were born into the world with minds like "blank slates" and that their experiences determined what kind of adults they would become. His ideas challenged the ideas of Plato and Rene Descartes where they argued that there are certain knowledge that are inborn in humans.
It still show stuff you do in real life
Answer: The Fugitive Slave Act required all citizens to assist in the capture of escaped slaves, which the North didn't approve of, as they wanted to end slavery.
Explanation: In many history classes, you'll be taught that the North wanted to free all the slaves and <em>opposed</em> the South's cruel use of slavery, although all states similarly took advantage of those who were slaves.
If the Northern states were to <em>approve</em> of the Fugitive Slave Act, they'd want to support slavery in the South, which wouldn't connect to what you'd be taught in school.