Question

the skin is a/an __?__ with a variety of essential tissues
duct
gland
organ
membrane

Explanation:

To determine the correct answer, we analyze each option:

• A duct is a tube - like structure for transporting substances (e.g., in glands), and the skin is not a duct.
• A gland is an organ that secretes substances, and the skin is not primarily a gland (though it has glandular structures).
• An organ is a structure composed of different tissues working together. The skin is made up of epithelial, connective, nervous, and muscle tissues, so it is an organ.
• A membrane is a thin layer (e.g., cell membrane, serous membrane), and the skin is a complex structure with multiple tissue types, not just a membrane.

Answer:

C. Organ