Apical abscesses on certain teeth have a marked tendency to produce cervical spread of infection that occurs most rapidly in abscesses of

The correct answer is choice 4.

This is something that you will tend to see clinically soon. Anyway certain apical abscesses have greater potential for spreading to the cervical or neck area than others. In particular, mandibular second and third molar infections may travel down fascial planes into the neck. Since three of these fascial planes form the visceral compartment which opens into the
thorax, dental infections can on occasion even enter the superior mediastinum of the thorax. The superior mediastinum contains many crucial structures, including the aortic arch, the superior vena cava. the vagus and phrenic nerves, and many other structures.

Of the other answer choices, note that maxillary teeth are not likely to lead to cervical fascial planes and that mandibular incisors and canines being in the same general anatomic area, are not therefore likely to be the correct answers.

Anyway, the correct answer to question is choice 4.