Which combining form is used to denote the relationship to nature in medical terminology?

• A. Noct/i
• B. Physic/o
• C. Rhin/o
• D. Proxim/o

Answer: (B)

This question tests recognizing a combining form that signals nature or natural characteristics in medical terms. The combining form comes from the Greek root physis, meaning nature or growth. When this form is used, it links to words that describe the body’s natural state, its physical nature, or the study of natural processes. That makes it the appropriate way to convey “relation to nature” in terminology. The other roots refer to specific, non-nature concepts—noct- to night, rhin- to the nose, and proxim- to near—so they don’t carry the sense of nature that the item is asking for.