Question

which invention was inspired by a burr?
a. velcro
b. gps
c. stun gun
d. dna analysis

Explanation:

The Swiss - engineer George de Mestral was inspired by the way burrs attached to his dog's fur and his clothing. He examined them under a microscope and developed Velcro, which consists of two layers - one with tiny hooks and the other with loops that can attach to each other, similar to how burrs stick.

Answer:

A. Velcro