The suffix -ity in medical terminology is linked to which concept?

• A. Quality
• B. State
• C. Quantity
• D. Ability

Answer: (D)

Suffix -ity forms abstract nouns that express a state or quality of something, often turning an adjective into a noun that names a condition. In medical terminology, this frequently conveys a sense of capacity or capability. That’s why ability is the best match: it directly names the capacity or power to do something, which the -ity suffix helps express when attached to roots that imply potential or function. The other options relate to ways we describe things (amount, or general notions of quality or state) but don’t capture the specific idea of having the capacity to perform an action as directly as ability.