Final answer:
Pollution in the atmosphere will have the most significant global consequences, as it affects global warming and climate change, impacting the entire planet and potentially causing long-term damage. The correct option is b.
Step-by-step explanation:
Pollution in different environments can lead to varied consequences. If we consider the options provided, pollution in the atmosphere will have the greatest global consequences, as atmospheric pollution contributes to global warming and climate change, affecting every part of the planet, not just localized regions. This includes global increases in temperatures, changes in weather patterns, and potential long-term, irreversible environmental damage.
Specifically related to the options given, pollution in the oceans significantly impacts marine life due to contaminants and changes in water temperature which can lead to shifts in marine populations. Rivers with pollution can indeed have local repercussions, often directly affecting the local ecosystem and communities who rely on these water sources. Soil pollution can have an extensive ecological footprint, impacting crop production, groundwater quality, and local biodiversity.
Considering the information provided and the overall global impact, the most suitable option that would complete the sentence correctly would be: 'Pollution in the atmosphere will have the greatest global consequences'.
Hence, Option b is correct.