Question

individual units found in all parts of the human body.

cells
systems.
organs
tissues

Explanation:

Analyze the definition

The question asks for the "Individual units found in all parts of the human body." This refers to the basic structural and functional building blocks of life.

Evaluate the options

• Cells: The smallest, basic structural and functional units of all living organisms, including humans.
• Systems: Groups of organs working together, representing a much higher level of organization.
• Organs: Structures composed of multiple tissue types working together.
• Tissues: Groups of similar cells working together to perform a specific function.

Determine the correct answer

Since cells are the fundamental, individual units that make up all tissues, organs, and systems in the human body, "Cells" is the correct choice.

Answer:

• Cells (Correct answer)
• Systems.
• Organs
• Tissues