Idio means which meaning?

• A. Strange
• B. Common
• C. Unknown
• D. Personal

Answer: (D)

The main concept tested is the meaning of the prefix idio- in medical terms. Idio- comes from Greek idios, meaning one’s own or peculiar to an individual. It signals something distinctive to a person or thing, rather than something general or known. That’s why personal is the best fit. Examples like idiosyncrasy (a trait peculiar to an individual) and idiolect (a person’s own way of speaking) illustrate this sense. The other options don’t capture that idea of something specific to an individual: common refers to shared traits, unknown to lack of knowledge rather than a personal attribute, and strange is a looser, everyday synonym that doesn’t convey the precise technical nuance.