Final answer:
The fetal skull's soft spots, or fontanels, consist of the anterior fontanel located at the top front of the skull and the smaller posterior fontanel at the back of the head.
Step-by-step explanation:
The "soft spots" in a fetal skull, known as fontanels, are crucial for the birthing process and continued growth of the skull post-birth.
The two main fontanels are the anterior fontanel and the posterior fontanel. The anterior fontanel, which is the largest, is located at the junction of the frontal and parietal bones at the top front part of the skull. It is diamond-shaped. The posterior fontanel, which is smaller and triangular-shaped, is located at the back of the head. These fontanels are made up of fibrous connective tissue that allows the skull to change shape during childbirth and provides space for brain growth after birth.
Therefore, the "soft spots" in a fetal skull are composed of (b) Anterior fontanels and (c) Posterior fontanels, with the anterior fontanel being the most prominent.