Which human activity has the lowest effect on global stability?

(Choice A)

Removing carnivores from a forest

(Choice B)

Heating homes with fossil fuels

(Choice C)

Reusing plastic bags

(Choice D)

Adding heavy metals to the water supply

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.

the tricuspid valve is present between right atrium and right ventricle