Ineed to find the answer about these reason 1this is unfair because reason 2 this is we should be free because reason 3 this is we are equal i need i hope someone can answer me

What do most climatologists see as a major cause of rising global temperatures? a. earth's closer proximity to the sun due to its gravitational pull b. greenhouse gases produced by burning fossil fuels c. rising ocean levels caused by melting polar ice sheets d. water pollution cause by industrial waste