If the earth were closer to the sun, the intense heat might evaporate the oceans and create an atmosphere similar to the atmosphere of

The answer you are looking for is "Venus". The planet has a dense atmosphere of CO2,which has produced a runaway greenhouse effect.

When the Earth ocean evaporate, as in the scenario, all of the dissolved CO2 will be liberated and end up in the atmosphere as well, giving us a Venus like greenhouse.

Hope you found this helpful :)

Ichoose b for patd