Final answer:
Japanese folk songs often encompass themes of nature, love, work, and war. These songs hold cultural significance and reflect the experiences and values of the Japanese people. The answer is options A and C.
Step-by-step explanation:
A. Japanese folk songs are often about nature.
C. Japanese folk songs are often about work.
Japanese folk songs encompass a wide range of themes, including nature, love, work, and war. These songs serve as an important cultural expression and reflect the experiences and values of the Japanese people. For example, the song 'Sakura Sakura' is a popular Japanese folk song that sings about cherry blossoms, symbolizing the beauty of nature.