Question

you are in the paragraph comprehension section.
aerodynamics is the study of how gases interact with moving bodies. because the gas that we encounter most is air, aerodynamics is primarily concerned with the forces of drag and lift which are caused by air passing over and under a solid body. these principles are essential for the design of aircraft, cars and even buildings. aerodynamics is the study of
a. how liquids move
b. the design of engines
c. how gases interact with moving bodies
d. the strength of materials

Explanation:

L'énoncé du paragraphe indique clairement que l'aérodynamique est l'étude de la manière dont les gaz interagissent avec les corps en mouvement.

Answer:

C. How gases interact with moving bodies