which of the following boys would be able to hear a rock falling off a cliff one kilometer away?

(1 point)
Responses

a boy swimming in the water
a boy swimming in the water

a boy lying down with his ear to the ground
a boy lying down with his ear to the ground

a boy sitting on the grass
a boy sitting on the grass

a boy sitting in a tree with his ear to the bark
a boy sitting in a tree with his ear to the bark

The correct answer is: a boy lying down with his ear to the ground.