The correct option is A Pyridoxine
Vitamin B6 is called pyridoxin. It is found in fruits, green-vegetables, milk, etc. Due to its deficiency, anemia disease is caused. Here are the vitamins associated with their names:
Pyridoxin- Vitamin B6
Thiamine- Vitamin B1
Tocopherol-VitaminE
Riboflavin-Vitamin B2
Hence, (a) is correct.