The correct answer is: d) Buangsi.
The buangsi is a wind instrument made from a gourd and bamboo pipes, commonly found in Mizo music. It is a double-reed instrument, meaning that it has two reeds that vibrate to produce sound. The buangsi is played by blowing air through the reeds and vibrating the lips. The instrument is held vertically and the player blows into the mouthpiece at the top of the instrument. The buangsi has a range of about two octaves and is used to play a variety of music, including folk songs, religious music, and dance music.
The other options are incorrect because they are not wind instruments made from a gourd and bamboo pipes. The bansuri is a bamboo flute, the rawanahatha is a stringed instrument, and the shehnai is a double-reed instrument made from wood.