Which of the following is a physical change? Select one: a. solid dry ice changing to a gas b. digesting a meal c. baking a cake d. fermenting grapes to produce wine e. a tomato ripening

Option A

Explanation:

In a physical change, physical characteristics such as shape, mass, volume, state, phase etc. changes while in a chemical change one substance convert into entirely different substance which may or may not be converted to its original form. Of all the given options, option A represents a physical change. In option A the phase of the substance has changed from solid to gas.