Respuesta :
C. D has nothing to do with anything in the passage, and A and B imply permanence, while the passage says the imprints were washed away.
Answer:
The one that best fits the context of the passage is "A mark made by pressing against a surface"
Explanation:
The passage is talking about the physical action of pressing their feet against the sand leaving a temporal impression of the shape they have, the other options are more emotional and permanent, the last option is a printed version made by a machine and ink, so it is an industrial printing. Option C gives the correct definition.