which statement is the best distinction between birds and other animals? plz

a bird have feathers.

b birds have amniote eggs.

c birds can fly.

d birds eat seeds.

A. Birds have feathers.

Explanation:

No explanation needed.

micro/nanoscale topography surface exhibits many prominent properties and is extensively employed in biomedical device, microfluidic device and energy device fabrication. additionally, the clinical applications of biomaterials can be largely expanded with of nanostructured surfaces.