Loss of Class C gene function leads to formation of:
That points to C: Repeated sepals and petals. Compared with the other options, Repeated sepals and petals is the one that correctly describes the ABCE & ABCDE MODEL +Synapdrgon flowering concept. The wrong ones are A) Only sepals; B) Only petals; D) Leaf-like organs. If you’re stuck, eliminate anything that contradicts a basic fact you already know for this topic.
Ref: Best CSIR NET Plant Physiology books: Master Unit 6 with Taiz & Zeiger and Salisbury & Ross. Crack Part C experimental questions with top textbooks.