Engineers often use designs that mimic shapes found in nature, such as flippers, wings, and beaks. Construct an argument that supports the use of structure-function relationships found in nature in engineering and design. Use the examples as evidence.

1 Climbing pads capable of supporting human weight are a mimic of the biomechanics of gecko feet.

2 The aerodynamics of the famous Japanese Bullet train was inspired by the shape of a bird’s beak.

3 The first flying machine heavier than the air from the Wright brothers, in 1903, was inspired by flying pigeons.

4 Architecture is inspired by termite mounds to design passive cooling structures.

5 Velcro is born from the observation of the hooks implemented by some plants for the propagation of their seeds via animal’s coat.

6 The study of shark skin is at the origin of particularly effective swimming suits, as well as a varnish for planes fuselage

Am I correct ?

i think the answer is b.