For each blank select one entry from the corresponding column of choices. Fill all blanks in the way that best completes the text.

Although considerable (i) resources had already been expended on the new drug, development had to be halted due to adverse effects during human testing; once hailed as a kind of (ii) that could be used to treat numerous physical and mental ailments, the drug will likely be remembered only as a financial albatross that bankrupted its developers.