Phase changes can brought about by heating and cooling. For example if water is heated enough to evaporates and becomes water vapor or steam.
Answer:
Okay....where is the question
For the first it would be D. For the second, it is A.
Her sister was walking her dog. Several well known celebrities are attending the party. The whole family is eating lunch. The new contract is being signed. Our cars are being thoroughly washed by an attendant.
Sorry if I’m wrong