A. their wings flapping at high speeds,
b. their wings flapping at high speeds
c ,their wings flapping at high speeds
d ,their wings flapping at high speeds,

D. ,their wings flapping at high speeds,

b)metaphor

explanation:

when reading the sentence carefully it says,"hope is a thing with feathers" it's like saying: hope is a thing like feathers

get what i'm saying? instead of using a smilie like or as they use "with"

it would be nice enough if i got .