Answer: B. plays a role in differentiation and elongation of the limb.
Explanation:
Apical ectodermal ridge can be defined as an anatomical structure that develops in the ectodermal cells at the end of the limb bud. It acts as a signaling center that enables the development of the limb. It is present on the distal end of the limb bud.
The ectodermal ridges are associated with the proliferation and differentiation of the mesenchymal cells which favors the rapid elongation of the limb precursor.
