Correct Answer: (a) Beriberi
Solution:White rice is milled rice that had its husk, bran, and germ removed. After milling, the rice is polished, resulting in a seed with a bright, white, shiny appearance. The milling and polishing processes of polished rice both remove nutrients. A diet based on polished rice leaves many people vulnerable to the neurological disease beriberi, due to a deficiency of thiamine (Vitamin B₁). Adopted over brown rice in the second half of the 19th century because it was favoured by traders, white rice has led to a beriberi epidemic in Asia (Including British India).