Q.Who introduced the term biodiversity?

Step 1. The chapter states directly: 'The term biodiversity was introduced by Walter Rosen (1986)' — confirming (b) as the one who introduced the term.

Step 2. Separately, the chapter states: 'Edward Wilson popularized the term Biodiversity to describe diversity at all levels of biological organization' — so (a) Edward Wilson is credited with popularising, not introducing, the term, making it the classic distractor for this question. …

Distinguish the chapter's separate attributions: Walter Rosen 'introduced' the term v …

• Picking Edward Wilson because he is more closely associated with the concept generally, without noticing the chapter's specific 'introduced vs popularised' wording. …