The correct option is B Adathoda vasica
Adhatoda vasica is a herb, which is used for the preparation of herbal medicines. It is used mainly to relieve respiratory disorders including asthma, bronchitis and cough.
Gymnema sylvestre is a herb which has the effect of suppressing the taste of sweetness and hence used as an anti-diabetic.
Phyllanthus emblica is gooseberry, which is used in various Ayurvedic preparations.
Thus, the correct answer is option (B).