Coal combustion at thermal power plants results in the emission of various types of pollutants, including carbon dioxide, oxides of nitrogen, and oxides of sulfur.

Option 1 suggests that only carbon dioxide is emitted. This is incorrect because, while carbon dioxide is a significant byproduct of coal combustion, it`s not the only pollutant produced.

Option 2 indicates that only oxides of nitrogen and sulfur are released. This is also incorrect as it excludes carbon dioxide.

Option 3 proposes that carbon dioxide and oxides of sulfur are the only emissions. But this option is wrong too, as it omits oxides of nitrogen.

Option 4, the correct answer, includes all these three pollutants – carbon dioxide, oxides of nitrogen, and oxides of sulfur. They are all indeed emissions from coal combustion at thermal power plants.