The following list best summarizes conditions that are unique to Earth because they are "just right" to support life:
Atemperature or amount of radiation from the Sun, gravity, atmosphere, and water
Bwater, a moon, and a lithosphere
Catmosphere, gravity, water, and a cryosphere
Ddifferentiated composition, water, atmosphere, and a lithosphere
Atemperature or amount of radiation from the Sun, gravity, atmosphere, and water
Bwater, a moon, and a lithosphere
Catmosphere, gravity, water, and a cryosphere
Ddifferentiated composition, water, atmosphere, and a lithosphere