In the scenario where the albedo of the Earth's surface significantly increases due to widespread ice formation, the most likely consequence would be:
2) global temperatures would decrease, potentially leading to a cooling climate and altered precipitation patterns.
Increased albedo means that more sunlight is reflected back into space rather than being absorbed by the Earth's surface. This would lead to a decrease in global temperatures. The cooling could, in turn, disrupt existing weather patterns and precipitation distributions, potentially causing various climatic shifts and changes in ecosystems.