(B) Cytokinins
Cytokinins are plant hormones found in greater concentration in areas of rapidly dividing cells, as they promote cell division (cytokinesis).
Cytokinins are specifically associated with promoting cell division and are naturally found in high concentrations in regions of active cell division such as root tips, germinating seeds, and fruits. This distinguishes them from auxins (cell elongation), gibberellins (stem elongation/seed germination), and abscisic acid (growth inhibition/stomatal closure). CBSE expects students to recall the specific function of each plant hormone.