Gold does not require complex extraction because it's a noble metal that is highly unreactive (inert), allowing it to be found in its pure, elemental (native) form in nature as nuggets or flakes, rather than locked in compounds, making options B and C correct, but C is the direct reason for not needing extraction from ore.

Therefore, while being precious (A) and neutral (D, technically, as it's an element), the key reason it's found easily is its inert nature (B) and presence as a free element (C).