What does the frontonasal process give rise to in facial development?

The frontonasal process is a critical structure in the early stages of facial development. During embryogenesis, it is responsible for the formation of several important components of the face. Specifically, it gives rise to both the lateral nasal processes and the medial nasal processes.

The lateral nasal processes develop into the sides of the nose, contributing to its overall shape. Meanwhile, the medial nasal processes fuse together at the midline, forming the bridge of the nose and contributing to the upper lip and parts of the maxilla.

Thus, it's accurate to say that the frontonasal process contributes to both sets of nasal processes, which is why the correct answer encompasses both the lateral and medial nasal processes. This understanding of facial development highlights the significance of the frontonasal process in creating essential features of the human face.