Which of the following would occur during the process of freezing?

During the process of freezing, a liquid transforms into a solid. This occurs when the temperature of the liquid drops below its freezing point, allowing the molecules to slow down and arrange themselves more closely in a structured, solid form. As heat is removed from the liquid, the kinetic energy of the molecules decreases, leading to a phase change. This is a fundamental concept in thermodynamics and physical chemistry, where phase changes are dictated by temperature and pressure conditions.

The other options refer to different phase transitions: a solid turning into a gas describes sublimation; a gas becoming a liquid indicates condensation; and a solid changing into a liquid refers to melting. Each of these processes involves a distinct set of conditions and transitions that do not apply to the freezing process itself.