Answer:
Decrease the transparency of the atmosphere
Step-by-step explanation:
Different gases have characteristic absorption bands, so-called greenhouse gases have very high bands in the infrared region and small bands in the region of visible light.
When the radiation arrives to pass the greenhouse gases (CO²) and affects the earth's surface after several processes, the earth emits radiation in the infrared region, but this is absorbed by the gases, creating a net heating, since that the transparency of the atmosphere is DECREASE for infrared radiation
Reviewing the correct answers is: Decrease the transparency of the atmosphere