Answer:
<em> Electroencephalogram (EEG) </em>
Explanation:
Electroencephalogram (EEG) can be described as a method to determine the electrical activity taking place inside the brain. The cells in the brain are known to communicate with each other by using electrical signals. An Electroencephalogram (EEG) determines whether these electrical impulses are having any problem or not. This method is known to record the electrical activity going on in the brain. In this method, electrodes are attached to the scalp of a person and pattern waves of the brain are generated.
An organ is a group of two or more tissues working together to perform a function. Hence, the organ can be correctly matched with 3.
The tissue is a group of specialized cells working together to perform a specific function. Hence, tissue can be correctly matched with 5.
An organ system is a group of organs working together to perform a function. Hence, organ system can be correctly matched with 2.
An organism refers to a group of organ systems working together to exhibit the six characteristics of life. Hence, the organism can be correctly matched with 1.
A cell is the smallest fundamental unit of life. Hence, the cell can be correctly matched with 4.
A mushroom is a decomposer! Please vote brainliest.