Option 1 is correct. Global diversity hotspots are regions across the world that are both rich in wildlife and at high risk for species destruction. Norman Myers introduced the hotspots concept. To qualify as a biodiversity hotspot, a region must meet two strict criteria:
• It must have at least 1,500 vascular plants as endemics — which is to say, it must have a high percentage of plant life found nowhere else on the planet. A hotspot, in other words, is irreplaceable.
• It must have 30% or less of its original natural vegetation. In other words, it must be threatened.
Options 2, 3 and 4 contain incorrect definitions of global biodiversity hotspots.