A bedding plane is a non-erosional boundary between two layers of sediment
(GLY ch. 9 > Earth Science)
The question is asking to choose among the following term that states the Indonesian name for Borneo and base on my research and further investigation, the correct answer among them is in letter D. Kalimantan. I hope you are satisfied with my answer and feel free to ask for more if you have questions and further clarifications
Option c would be the most befitting one.
