Question

An umbrella tends to move upward on a windy day because _____.
A. buoyancy increases with increasing wind speed
B. air gets trapped under the umbrella and pushes it up
C. the wind pushes it up
D. a low-pressure area is created on top of the umbrella
E. all of the above

Answer 1

E. all of the above

An umbrella tends to move upward on a windy day because _A. buoyancy increases with increasing wind speed 
B. air gets trapped under the umbrella and pushes it up 
C. the wind pushes it up 
D. a low-pressure area is created on top of the umbrella