Even though Smetana was deaf at the time, he composed a musical work depicting Bohemia's main river as it flows through the countryside. The name of the river, and the musical composition, is the .

The correct answer is Moldau

Bedrich Smetana was a bohemian composer born in Litomysl, Bohemia, today in the Czech Republic, founder of the Czech national music school. Initially guided by his father, an amateur violinist, he soon started taking piano lessons and gave his first concert at the age of six. Later, he became a teacher and, encouraged by Liszt, opened a piano school in Prague (1848). First outstanding composer of the Bohemian nationalist current. He composed most of his works for piano, which constitute an important contribution to the piano repertoire.

d. i assume the underlined word is "role." reformat if it isn't.

explanation:

role is closest to part because when replacing words, "playing a vital decision," "playing a vital activity," and "playing a vital dollar" don't make logical sense. the only meaningful choice is "playing a vital part."

this fits one of merriam-webster's definitions of role: "a function or part performed especially in a particular operation or process."