Which animal has become extinct in India?

Loss of biodiversity leads to $...........$

$A$: The process of extinction is random and fast.
$R$: Any species not adapted to environmental conditions cannot survive.

Assertion: Tropical rain forests are disappearing fast from developing countries such as India.
Reason: No value is attached to these forests because these are poor in biodiversity.

The primary cause of biodiversity loss is .....

Select the appropriate option regarding the term 'The Evil Quartet'.