Removal of apical bud results in:
That points to C: Lateral bud growth. Compared with the other options, Lateral bud growth is the one that correctly describes the Auxin Phytohormone concept. The wrong ones are A) Reduced branching; B) Increased auxin; D) Root inhibition. 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.