Can someone first tell me what is the Q asking ?

Strengthen or assumption ?

Strengthen I suppose ?


Two courses of antibiotic treatment are currently available for certain respiratory infections. The first is administered over two months; the second contains the same amount of antibiotics but is condensed to a one-month period. A medical study found that patients who opted for the intensive course experienced a more complete convalescence with fewer complications than did those who took the two-month treatment. The recommendation that the two-month treatment be eliminated, in accordance with this finding, would be deemed most sound if it could be shown that ___________________.


Which of the following best completes the passage?
Choices
A
patients who took intensive antibiotics courses for vascular inflammation reported better results than those who opted for slower treatment.

B
an intensive course of antibiotic treatment can sometimes lead to complications in patients with weaker immune systems

C
the pre-treatment difference, medically speaking, between those patients who opted for the intensive course and those who chose the longer course is negligible.

D
patients who opted for the non-intensive course of treatment did so because they had experienced prior complications with antibiotic treatment.

E
the antibiotic delivery system differs significantly between the one-month and two-month courses of treatment.