Answer:
A. Baking bread.
Step-by-step explanation:
An exothermic process is a process that releases heat into the surroundings. Baking bread is an example of an exothermic process because it involves a chemical reaction between the yeast and the sugars in the dough, which releases heat as a byproduct. This heat is transferred to the surroundings, causing the bread to rise and to become crispy and brown.
Melting ice and freezing water are both examples of endothermic processes, as they require an input of energy in order to occur. Melting ice requires the addition of heat to break the bonds holding the ice molecules together, while freezing water releases heat into the surroundings as the water molecules form bonds with each other. Option B, "None of these," is not a valid answer, as there is at least one example of an exothermic process among the choices.