What machine the wave shape of an electrical signal

function generator

Explanation:

Electric and magnetic phenomena may contain or they can enter information and data. Then these phenomena are called electrical signals.

Function generators periodically produce electrical signals that are used to check electrical circuits.

It represents software used to produce the electrical waveforms.

i think it would be b. tissue because an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.

it is prolly d and c and f