Rice,Wheat,Maize and Bajra are
Cereals
The correct option is A:
Explanation of the correct option :
Explanation of the incorrect option:
Option B:
Medicinal plant are those which provide product for treatment of disease.
Option C:
Beverages are those which are used for drinking.
Option D:
Poisonous plants are those which produces harmful product.
Final answer: Rice, wheat, maize and bajra are cereals.