Question

Assertion (A): Habitat loss and fragmentation is the most important cause driving animals and plants to extinction.
Reason (R): Habitat loss and fragmentation cause alien species invasion.

1. Both A and R are true, and R is a correct explanation.
2. Both A and R are true, and R is not a correct explanation.
3. Both A and R are false.
4. A is true, and R is false.