sound waves are transferred by the compression of particles. the closer the particles are to one another, the faster the energy is transferred. therefore, sound energy directly depends upon the of the medium.
a) density
eliminate
b) mass
c) pressure
d) volume

Well, your answer will be A, density

Therefore, sound energy directly depends upon the density of the medium. Density is a measure of particle closeness

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up