Bedbugs go through:

Bedbugs undergo gradual metamorphosis, also known as incomplete metamorphosis, which includes three stages: egg, nymph, and adult. Nymphs resemble smaller versions of adults and go through several molts before reaching maturity. TheGeneral Pest Management: Guide for Commercial Applicators - Category 7A(Chapter 7: Bedbugs) confirms this life cycle. Option A (four stages: egg, larva, pupa, adult) describes complete metamorphosis, typical of insects like beetles, not bedbugs. Option C (two stages) is incorrect, as nymph stages are a critical part of bedbug development.