The correct option is A A-III, B-I, C-II, D-IV
Auxin:
• Initiate rooting in stem cuttings
• Promotes flowering
• Prevents early fruit and leaf drop
• Promotes the abscission of mature leaves and fruits
• Induces parthenocarpy
• Used as herbicides to kill dicotyledonous weeds
Cytokinin:
• Produces new leaves, chloroplasts in leaves, lateral shoot growth and adventitious shoot formation
• Helps overcome the apical dominance
• Delays leaf senescence
Ethylene:
• Promotes senescence and abscission of leaves and flowers
• Promotes fruit ripening
• Breaks seed and bud dormancy
• Promotes rapid internode elongation
• Promotes root growth and root hair formation
• Initiates flowering
Abscisic acid:
• Regulates abscission and dormancy
• Acts as plant growth inhibitor
• Inhibits seed germination
• Stimulates the closure of stomata (stress hormone)