Thanks for the question! So we’re being asked here why the version of multicultural education in the first paragraph is “modest.” Well, what is that version again? This is the version that examines other cultures through the lens and worldview of the majority culture. Take a look at lines 5-9. The other ones involve a neutral perspective of cultures or adopting the values of the cultures you’re studying, which are much bigger shifts. So this first worldview is modest because you don’t change the educational system as much, which is what (B) says.
Hope this helps! Feel free to ask any other questions that you might have.