Question: What do streak lines represent in fluid mechanics? a . The line where fluid particles have passed through a specific point b . A cross

What do streak lines represent in fluid mechanics?
a. The line where fluid particles have passed through a specific point
b. A cross-sectional line of fluid particles at an instant
c. The instantaneous position of fluid particles
d. The path traced by a fluid particle over time
What do streak lines represent in fluid

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