Where is the world's largest concentration of wild orangutans?

Where is the world`s largest concentration of wild orangutans?

Here is the question :

WHERE IS THE WORLD’S LARGEST CONCENTRATION OF WILD ORANGUTANS?

Here is the option for the question :

Borneo
Papua New Guinea
Sumatra
Timor

The Answer:

And, the answer for the the question is :

Borneo

Explanation:

[STC002663] The word “orangutan” originates from the Malay language and means “man of the jungle.” This is an appropriate name for an animal that spends the most of its time in the trees. Orangutans come in three different species, and all of them are indigenous to only two islands in Asia: Borneo and Sumatra. These clever, but critically endangered, primates build their beds out of branches high in the trees every night and make tools to dig up food. The World Wildlife Fund estimates about 104,000 remain in Borneo and 7,500 in Sumatra, but ecotourism is playing a part in protecting habitats and reducing poaching.