The answer is B ( you could have just looked it up online)
Answer:
Air
Explanation:
It takes up space/ the rest do not
Connective tissue is developed from embryonic mesoderm. It often consists of interlacing protein fibers (though there are some exceptions, such as blood) that form a framework for and connect, support, separate, and bind tissues and organs in the body. Examples include cartilage and bone.
Hope this helps!
Metallic properties head to the left.
Cyst. It's hard-walled and sturdy.
