Neither the falcon nor the eagle would be likely to build a nest -

a) on a high bridge tower

b) under a bush

c) in a tall pine tree

d) outside a 15th storey window.

B) Neither the falcon nor the eagle would be likely to build a nest under a Bush.

Explanation:

Falcons: They are approximately 20 inches tall, and mostly made their nest on cliffs/ mountains tops, very tall buildings, high towers and beneath bridges.

Eagles: They are approximately three feet tall. They built their nests on the tall trees. Especially those located near rivers. Bald eagles never built their nest on the ground.

Therefore:

Both falcons and eagles build their nest on higher places and will never build their nests under bushes or on ground.

nucleus

would be most reasonable answer tbh