From the information in the passage, there is evidence
A
against the theory that the common cold is indeed infectious
B
for the theory that the common cold is indeed infectious
C
that old people are immune against the common cold
D
that medical reports are silent on facts about common colds
Verified Correct Answer: B.
Grammar & Contextual Explanation
The passage provides evidence supporting that the common cold is indeed infectious, especially in the part describing the experiment at the Common Cold Research Unit in Salisbury. Here, a group was inoculated with secretions from cold sufferers, and seventy-three of them developed colds, as opposed to only one person from the salt-water group. This result supports the idea that the common cold is infectious.
Source: Myschool Past Questions Archive (Record #15086)