Quinine, the effective medicine in the treatment of malaria, is extracted from

Correct answer: (b) Bark of Cinchona

Explanation

Quinine is an alkaloid used to treat malaria, caused by the Plasmodium parasite.

It is extracted from the bark of the Cinchona tree, native to Peru.

It is not obtained from cinnamon, Ocimum (tulsi) leaves or Acacia catechu.