When local anesthesia is placed at the BASE of a lesion on the LATERAL tongue, which nerve is MOST likely being anesthetized?

The lingual nerve (a branch of the inferior alveolar nerve, which is a branch of V3 / mandibular division of CN V) provides general somatic sensation to the anterior 2/3 of the tongue. Infiltration at the base/lateral tongue would anesthetize the lingual nerve. The glossopharyngeal nerve (CN IX) provides sensation to the posterior 1/3 of the tongue and pharynx. The hypoglossal nerve (CN XII) is purely motor to the tongue muscles — it is not anesthetized by local anesthetic for sensory block.