Which of the following is a symptom of hypocalcification?

Hypocalcification is a dental condition characterized by the insufficient mineralization of the enamel during tooth development. One of the most visible symptoms of hypocalcification is the presence of white spots on the teeth. These spots result from the affected areas where the enamel is less mineralized, making them appear chalky or opaque in contrast to healthy enamel.

The appearance of white spots is a direct indicator of this condition, reflecting the underlying enamel's structural deficiency. This is in line with the pathophysiology of hypocalcification, as the enamel fails to completely mineralize, leading to these noticeable discolored areas on the teeth.

The other options listed, while they may indicate other dental issues, do not directly correlate with hypocalcification. Brown spots on teeth are typically associated with different conditions, such as dental caries or staining. Increased tooth sensitivity can result from various factors, including enamel erosion or gingival recession, but is not a hallmark of hypocalcification. Enlarged gums are generally related to periodontal disease or inflammation, not enamel development issues like hypocalcification.

Thus, the identification of white spots as a symptom of hypocalcification is accurate and connects directly to the nature of the condition.