PT 20 S1 Q2

A director of the Rexx pharmaceutical Company argued that the development ... ...

Which one of the following, if true, most weakens the support offered by the company director for the claim concerning the marketing of vaccines?
(A) Vaccines are administered to many more people than are most other pharmaceutical products.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Weaker: Intro Set