A word that relates to Neoclassical emphasis rather than Romantic emphasis is restrictions. Option A is correct.
Neoclassicism refers to Western movements in the decorative and visual arts, literature, theatre, music, and architecture that draw inspiration from the "classical" art and culture of classical antiquity. The writings of Johann Joachim Winckelmann gave rise to neoclassicism, at the time of the rediscovery of Pompeii and Herculaneum.