why common emitter configurations are widely used in single stage amplifier design??? please explain me

 

How about you please explain us what YOU have done to attempt answer YOUR homework problem.

 

why common emitter configurations are widely used in single stage amplifier design??? please explain me

The common emitter has high gain.

 

i read some books. i got the basic idea that, It is easy to bias and it has the most gain.
but i need it more deeper as they have asked to describe it more

 

Have you considered input and output impedance?