The odd one out from the given options is Chlorophyll.

**Blood, Urine, Sweat, and Chlorophyll**

To determine the odd one out, let's analyze the characteristics and properties of each option:

1. Blood: Blood is a bodily fluid that circulates through the arteries and veins, transporting oxygen, nutrients, hormones, and waste products throughout the body. It is composed of red and white blood cells, platelets, and plasma.

2. Urine: Urine is a waste product excreted by the kidneys. It contains water, electrolytes, and metabolic waste products, such as urea and creatinine. Urine helps to eliminate toxins and maintain the body's balance of fluids and electrolytes.

3. Sweat: Sweat, also known as perspiration, is a liquid produced by sweat glands in the skin. It helps regulate body temperature by evaporating from the skin's surface, cooling the body. Sweat is primarily composed of water, but it also contains small amounts of salt and other minerals.

4. Chlorophyll: Chlorophyll is a pigment found in the chloroplasts of plant cells. It plays a crucial role in photosynthesis, the process by which plants convert sunlight into energy. Chlorophyll absorbs light energy and uses it to synthesize carbohydrates from carbon dioxide and water.

**Explanation:**

The odd one out is Chlorophyll because it is the only option that is not related to bodily fluids or waste products. Blood, urine, and sweat are all bodily fluids involved in various physiological processes in the human body, while chlorophyll is a pigment found in plants that aids in photosynthesis.

While the other options are directly related to the functioning of the human body, chlorophyll is specific to plants and their ability to convert sunlight into energy. Therefore, it does not fit in the category of bodily fluids or waste products.

In summary, the odd one out is Chlorophyll because it is the only option that does not belong to the category of bodily fluids or waste products.

Corrrect answer is B