what hairpiece has a base that covers the crown, occipital and nape area?

The hairpiece you’re asking about is called a fall.

What a fall is

A fall is a partial wig or hairpiece that’s constructed on a base large enough to cover the crown, occipital, and nape areas of the head. It blends with the wearer’s own front hairline or fringe, so it gives fuller length and volume from the top back down without being a full wig.

How it compares to other pieces

Other common options in the same multiple‑choice context do not have bases that cover all those zones.

• A braid is just a style made by interlacing strands of hair, not a base‑mounted hairpiece.

• A switch is a long weft or tail of hair used mainly to form ponytails or updos.

• A chignon is a bun or knot style at the back of the head, again not a base that covers crown to nape.

So if you see the question “what hairpiece has a base that covers the crown, occipital and nape area?”, the correct answer is fall.