Which of the following practices is MOST likely to slow the buildup of CO2 in the atmosphere?

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a
an increases in the usage of desalination plants
b
a reduction in the usage of nuclear power
c
use of solar panels to generate electricity instead of fossil fuels
d
deforestation of tropical rainforests

The correct answer is c. Use of solar panels to generate electricity instead of fossil fuels. Solar panels generate electricity through renewable energy sources, which does not release CO2 into the atmosphere. This can help slow down the buildup of CO2 in the atmosphere.

Options a (increases in the usage of desalination plants), b (reduction in the usage of nuclear power), and d (deforestation of tropical rainforests) do not directly address the issue of CO2 buildup in the atmosphere and may even contribute to it in some cases.