Answer: D. A direct cause is the immediate land-use change; an indirect driver is an underlying human pressure that leads to that change. Clearing the mixed dipterocarp forest for plantations is direct. Population growth raises demand for land, indirectly driving wetland loss through drainage for housing. A: identifies the indirect demand for palm oil rather than the direct forest clearance. B: gives the immediate drainage action for the wetland, not its indirect driver. C: gives an indirect forest pressure and the direct wetland action, reversing both requested categories. Remember: distinguish the land conversion itself from the human pressure that motivates it.