Which architectural style is represented by the building on the right?

Analysis:

The building on the right features round arches, sturdy, massive walls, and a semicircular apse. These are characteristic elements of Romanesque architecture. The options provided are 'романский' (Romanesque), 'византийский' (Byzantine), and 'готический' (Gothic).

The Gothic style is characterized by pointed arches, ribbed vaults, and flying buttresses, which are not present here. Byzantine architecture often features domes and intricate mosaics.

Therefore, the most fitting style among the choices is Romanesque.

Ответ: романский