Which one of the following situations are likely to involve turbulent flow?

Question

a 1 micrometer microbe swimming in water at 30 micrometers per second

a 1 millimeter bug crawling on the windshield of a car that is travelling at 30 m/s

a 10 micrometer blood cell moving through a similarly sized capillary at 0.3 mm/s

a 1 millimeter insect wing beating in air with a speed of 3 m/s

a 1 centimeter superball tossed through the air at a speed of 3 m/s