Final answer:
The most likely species to become extinct among the given options is the endangered tiger.
Step-by-step explanation:
The most likely species to become extinct among the given options is the endangered tiger. An endangered species is at a much higher risk of extinction compared to threatened species or vulnerable species. The status of being endangered indicates that the population of the species is critically low and declining.
On the other hand, a threatened species, like the bear, is a step below an endangered species but is still at significant risk of extinction if necessary conservation measures are not taken. A vulnerable species, like the eagle, has a lower risk of extinction compared to threatened or endangered species but is still facing some threats.
A stable species, like the lizard, is not currently at risk of extinction. The stable status indicates that the population is healthy and not facing significant threats at the moment.
Learn more about Endangered species and extinction