Answer is b that is Heat energy from below the ground converts water to steam to drive a steam turbine attached to an electrical generator.. .
Adding my answer for points thank you everyone for this
I think it's C, longer wave length.
Answer:
no you would not hear an echo if you shouted in your bedroom
Explanation:
Echo is a sound produced when the original sound is reflected by walls of a given room. ... So for the case of a bedroom, no echo is produced because there are stuff and the furniture block the sound from reaching the wall hence no bouncing back of sound.
so sorry if i'm wrong :)