题目解析:
第4段高亮句主干:(1)Entirely functional, the Roman aqueduct conveys the balance, proportion, and rhythmic harmony of a great work of art and (2)fits naturally into the landscape.
A 选项 Because 的因果逻辑及 more naturally into 的比较关系文中未提及,错误;
B 选项体现了主干信息的 functional and artistic 对应(1),blend naturally with the landscape 对应(2),正确;
C 选项 rather than 的否定表达文中未提及,错误;
D 选项 is often inspired by the landscape 文中未提及,错误。
故选 B。