Question

multiple choice question
which word root means air?

• -strat
• cata-
• aer-
• -zym

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Explanation:

The word - root "aer -" is commonly used in words related to air, such as "aeroplane" (a vehicle that moves through air) and "aerodynamics" (the study of the motion of air and objects moving through it). The other word - roots have different meanings. "-strat" is related to layers (e.g., stratosphere which has layers of the atmosphere but the root itself doesn't mean air), "cata -" means down or downward (e.g., catapult, where the motion is downward - like in the initial action), and "-zym" is related to enzymes (e.g., zymogen, a precursor of an enzyme).

Answer:

C. aer-