Which of the following is considered a physical science?

The correct answer is rooted in the broader categorization of sciences. Physical sciences are fields that study non-living systems, encompassing the fundamental aspects of chemistry and physics, among others. Optics is a specialized branch within physics that deals with the behavior and properties of light, making it a sub-discipline of the physical sciences.

Chemistry is also a physical science, focusing on the composition, structure, properties, and reactions of matter. Physics investigates the fundamental laws governing the universe, including motion, force, and energy. While biology studies living organisms and their interactions, it is classified as a life science rather than a physical science.

Therefore, optics, being a field that falls under the umbrella of physics, qualifies as a physical science, highlighting the connection between light behavior and physical principles.