Answer: (Detailed Solution Below)
Option A: Marine (ocean)
Detailed Solution:
The correct answer is “Marine (ocean)”.
Marine (ocean) ecosystems are generally considered the most stable ecosystems on Earth. They are characterized by their vast size, relatively constant temperatures, and abundant resources.
Oceans can absorb and buffer changes in temperature, salinity, and other environmental factors, making them more resilient to disturbances than terrestrial ecosystems.