Which of the following prefixes means "small"?

The prefix "micro-" is derived from the Greek word "micros," which directly translates to "small." This prefix is frequently used in various scientific and medical contexts to denote something that is diminutive in scale, such as "microscope," which refers to an instrument used to view small objects. Its application extends to fields like biology, where "microorganism" refers to tiny living entities, and technology, where "microchip" indicates a small electronic component.

Other prefixes provided have different meanings: "osteo-" relates to bones, "nucleo-" pertains to nuclei or the core of cells, and "neuro-" relates to nerves or the nervous system. Thus, "micro-" is indeed the correct choice for denoting something small. Understanding the specific meanings of these prefixes is essential for comprehending various terms in medical and scientific discussions.