Detailed Solution:
The correct answer is “Only 1”.
Borneo Island is divided among three countries, namely Indonesia, Malaysia, and Brunei. However, Borneo Island was formed due to geological processes involving tectonic plate movements and erosion, not volcanic deposition.
1) It is divided among three countries: True. Borneo Island is indeed divided among three countries: Indonesia, Malaysia, and Brunei. The southern part of the island is part of Indonesia (Kalimantan), while the northern part includes the Malaysian states of Sabah and Sarawak, and the small nation of Brunei is located on the north coast.
2) It has been formed due to volcano deposition: False. While Borneo does have some mountainous regions, it is primarily made up of sedimentary rock and has a complex geological history that includes tectonic activity. However, it is not predominantly formed by volcanic deposition; rather, it has experienced erosion and sedimentation processes over millions of years.