Question

what happened to change the state of the butter? more heat was added. more chemicals were added. heat was taken away. the particles of the butter slowed down.

Explanation:

When more heat is added to butter, it changes from a solid to a liquid state due to the increase in the kinetic energy of its particles. Adding more chemicals is not the typical cause for state - change of butter. Removing heat would solidify it if it was liquid and particles slowing down occurs when heat is removed.

Answer:

A. More heat was added.