The correct option is
A Partial root parasite
Santalum album, commonly known as Indian sandalwood tree, is a genus of woody flowering plants. The roots of Santalum trap the roots of other plants to derive water and other inorganic nutrients, though it can photosynthesise itself.
Since, it is partially dependent on other plants for deriving water and inorganic nutrients but can photosynthesise its own food, it is a partial root parasite.
So, the correct answer is 'Partial root parasite'.