There are two types of vitamins: , which are stored in the liver (excess of them becomes toxic), and , which are excreted in the urine.

I think these will be the fat soluble vitamins the A,D,E,K

Explanation:

The liver stores vitamin A, D, E, K and B12. The first four of these are all fat soluble. This means that the bile secreted during digestion is essential for absorbing them so that the body can use them. If bile production is compromised by liver damage, the proper absorption of these vitamins may be affected.

For this item, I would go with letter "D. physical destruction of marine habitats". Many of the modern ways of fishing poses an irreversible destruction to marine habitats. These practices include trawling, lining methods, purse seining, etc.