The heading \"Properties of Light\" relates to the study of which subject?

• A. Sound
• B. Color
• C. Light
• D. Heat

Answer: (C)

The heading points to optics, a branch of physics that studies light and how it behaves and interacts with matter. Because the topic focuses on light itself—its properties, how it travels, reflects, refracts, and relates to color perception—the subject is Light. Sound belongs to acoustics, and heat to thermodynamics, which deal with different kinds of waves and energy. Color is a property that arises from light and perception, but the study area described by the heading is the science of light and its behavior, so Light is the best fit.