The species most likely to go extinct would be:
a species with a slow reproduction rate and very little genetic variation living in a changing environment.
Here's why:
- Slow Reproduction Rate: Species that reproduce slowly cannot recover quickly from population declines.
- Little Genetic Variation: Low genetic diversity limits the species' ability to adapt to environmental changes or stresses, making it more vulnerable.
- Changing Environment: An unstable or changing environment presents numerous challenges that the species may not be able to cope with, especially given its low adaptability due to genetic limitations.
All these factors combined make this particular species very susceptible to extinction.