Electrolytes are found in:

a. Blood
b. Bodily Fluids
c. Urine
d. All of the above

d. All of the above

d. All of the above

Electrolytes are minerals found in various body fluids, including blood, bodily fluids, and urine. These minerals help regulate many important bodily functions, such as nerve function, muscle contractions, and maintaining proper hydration levels.

To find the answer to this question, we need to know what electrolytes are and where they are typically found.

Electrolytes are minerals that carry an electric charge when dissolved in bodily fluids. They play a crucial role in various bodily functions, including maintaining proper hydration, regulating blood pH levels, and supporting muscle and nerve functioning.

Now, let's break down the answer choices:

a. Blood: Electrolytes are indeed found in blood. They are essential for maintaining the balance of fluids inside and outside of cells and ensuring proper functioning of the cardiovascular system.

b. Bodily Fluids: This is a broad category that includes fluids such as saliva, sweat, tears, and cerebrospinal fluid. Electrolytes are present in the bodily fluids to maintain osmotic balance and support proper cellular function.

c. Urine: Electrolytes are also excreted in urine. The kidneys play a vital role in regulating electrolyte levels in the body, and excess electrolytes are eliminated from the body through urine.

d. All of the above: Considering that electrolytes are found in blood, bodily fluids, and urine, the correct answer is "d. All of the above."

In summary, electrolytes are present in blood, bodily fluids, and urine, making option d the correct answer.