El día está caluroso which is option A is the right choice to describe such temperature condition.
This is defined as the degree of hotness or coldness of a substance and is determined by thermal energy.
We were told that the place is sunny and the temperature is 40ºC which means that the place is hot hence why El día está caluroso was chosen.
Read more about Temperature here https://brainly.com/question/2331658
#SPJ2
