When making bread why is the dough left in a warm place for a while before putting it in the oven

so that bread will rise when heating

Explanation:

the yeast will activate and be ready to produce gases when baking

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.