When extrusive igneous rocks are broken down by weathering, they are likely to form sedimentary rocks. Here's why:

* Weathering: This process breaks down the igneous rock into smaller fragments (like sand, silt, and clay).

* Erosion: These fragments are then transported by wind, water, or ice.

* Deposition: The fragments eventually settle in a new location, often in layers.

* Compaction and Cementation: Over time, the weight of overlying sediments compacts the loose fragments together, and dissolved minerals in the water cement them into solid rock.

Examples of sedimentary rocks formed from weathered igneous rocks:

* Sandstone: Formed from sand-sized fragments of weathered igneous rocks.

* Conglomerate: Formed from larger, rounded fragments of weathered igneous rocks.

* Mudstone/Shale: Formed from fine clay particles derived from weathered igneous rocks.

Therefore, the type of sedimentary rock formed will depend on the size and type of fragments produced by weathering.