A drug having higher efficacy in treating many types of infection can, at present, be obtained only from the bark of the ibora, a tree that is very rare. It takes the bark of 500 trees to make 100 gram of the drug. It follows, therefore, that continued production of the drug must lead to the ibora's extinction from the planet. Which of the following, if true, most seriously weakens the argument above?
A. The drug made from ibora bark is dispensed to doctors from a central authority.
B. The drug made from ibora bark is expensive to produce.
C. The drug made from ibora bark is expensive to produce.
D. The ibora can be propagated from cuttings and grown under cultivation.
সঠিক উত্তরঃ
D.
The ibora can be propagated from cuttings and grown under cultivation.
