Final answer:
Transcellular fluids are specific compartments of extracellular fluid, and the fluid component of blood (plasma) is not categorized as a transcellular fluid. Option b.
Step-by-step explanation:
Transcellular fluid is a part of the extracellular fluid (ECF) that exists in various compartments throughout the body. Examples of transcellular fluids include the cerebrospinal fluid that bathes the brain and spinal cord, lymph, the synovial fluid in joints, and the aqueous humor of the eye.
These fluids are distinct from intercellular fluids found within the cells or blood plasma which are not considered transcellular fluids.
Therefore, the option from the provided list that is not considered a transcellular fluid is:
(b) the fluid component of blood
This is because the fluid component of blood is known as plasma, which is part of the ECF but not categorized as a transcellular fluid. So Option B.