Hi!

A conclusion is something which is derived from the arguments given and not by adding additional points like one does to strengthen or weaken.

Which of the following can be properly concluded from the statements above?

(A) The beneficial effects of the drug in the doses in which it is administered are short-lived compared to the effects of some other injected medications.- Correct- The argument is talking how useful the drug and then says as one need the drug frequently the given drug is not as suggestive and the use of other medication is preferred. Thus, the due to the number of doses this drug is not prescribed.
(B) Less-frequent injections of the drug in larger doses would provide a satisfactory treatment for very high blood pressure.- Irrelevant- The highlighted part is not discussed in the argument
(C) The human body can be stimulated to produce the hormone whenever blood pressure reaches dangerously high levels.- Irrelevant
(D) When the drug is administered orally rather than by injection, it reverses very high blood pressure but also causes undesirable side effects.- Out of scope
(E) Drugs that are administered orally can reverse very high blood pressure even more rapidly than can drugs taken by injection. Out of Scope

Hope this helps!