Final answer:
Niacin is the water-soluble vitamin found in pork, fish, and whole grains.
Step-by-step explanation:
The water-soluble vitamin found in pork, fish, and whole grains is niacin. Niacin, also known as vitamin B3, plays a crucial role in converting food into energy, maintaining healthy skin, and supporting the nervous system. It is essential for the proper functioning of enzymes in our body.
Learn more about Identification of water-soluble vitamin found in certain food sources