Provide your best answer for the following question. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The question is: Blood is composed of different cell types that transport nutrients and wastes throughout the body. Because of this, blood is classified as
a tissue.
connective tissue. (Blood is actually classified as a specialized type of connective tissue called liquid connective tissue or plasma.)