The belief on the unifying spirit is one of the characteristics of transcendentalism that is believed to have stemmed from romanticism. The interest as to how people gain knowledge, humans being naturally moral and good and the importance of individual is not part of those characteristics.
The answer is: <u>B.) a belief in the unifying spirit. </u>
Explanation:
Althought these two terms were considered rather different despite of both taking place on the same period (1840-1860), one ,ain characteristic was basically "the spirit" itself, as Transcendentalism had a really spiritual component, which entailed feelings and imagination... Two nouns which describe Romanticism; feelings, spirituality and imagination. The other three options have nothing to do with romanticism.