৯ম - ১৩তম গ্রেড পরীক্ষার প্রস্তুতি১টি পরীক্ষায় এসেছেপ্রশ্ন ৪০What is the most accurate meaning of the word 'Nostrum'?কA legitimate therapy prescribed by medical professionalsখA carefully tested and approved pharmaceutical drugগA widely accepted and scientifically proven cureঘA secret remedy with questionable effectiveness, often sold as a panaceaউত্তর দেখুন