Question

how does the article develop the idea that the new research explains previously unknown information about the immune system?
a by comparin and current research on the immune
b by presenting debates amongst scientists about the research
c by explaining the process of the research and providing quotes from experts
d by including narratives and anecdotes from all the scientists involved in the research

Explanation:

• Option A: Comparing previous and current research would show what was unknown before (from previous research) and what the new research reveals (current research), thus highlighting the new information about the immune system.
• Option B: Presenting debates doesn't directly explain the new information. It focuses more on differences in opinions rather than new discoveries.
• Option C: Explaining the research process and quotes from experts might give context but not necessarily show that new, previously unknown information is presented.
• Option D: Narratives and anecdotes from scientists could be more about the story of the research rather than clearly demonstrating the new, unknown information about the immune system.

Answer:

A. by comparing previous and current research on the immune system