Which example is given to the type of scientific concept

How did alexander fleming’s research solve a societal problem? he developed ways to treat inherited diseases. he advocated for regular hand washing to kill germs. he discovered a new type of medicine that could treat infections. he discovered the cause of mad cow disease, an emerging disease.

Which anatomical plane is the only one that could not show both the sternal region and vertebral region

What do transitional fossils best support?