Which tooth is correctly associated with an oblique ridge and its involved cusp?

The maxillary second molar is indeed associated with an oblique ridge, which is a prominent feature of this tooth. The oblique ridge forms as a result of the fusion of the triangular ridge of the mesiobuccal cusp and the distal cusp ridge of the mesiolingual cusp. This ridge typically runs from the mesiolingual cusp to the distobuccal cusp of the tooth.

In terms of function, the oblique ridge plays an important role in the occlusion and the chewing process, as it helps to strengthen the overall structure of the tooth and provides stability during mastication.

Other options do not accurately connect a specific tooth to its associated oblique ridge and the relevant cusp. The maxillary first molar does have an oblique ridge, but it does not involve the mesiobuccal cusp specifically. The maxillary third molar and the mandibular first molar do not possess oblique ridges, making the association incorrect. Therefore, the identification of the maxillary second molar with its oblique ridge and the distobuccal cusp is correct and highlights a significant anatomical feature in dental anatomy.