This question asks you to match the types of rocks and minerals in List I with their corresponding descriptions in List II. In List I, the options are A. Slate, B. Lignite, C. Bauxite, and D. Granite. In List II, the options are 1. Igneous rock, 2. Metamorphic rock, 3. Non-ferrous mineral, and 4. Sedimentary rock.

According to the given answer, option 2 is the correct answer. This means that A (Slate) matches with 2 (Metamorphic rock), B (Lignite) matches with 4 (Sedimentary rock), C (Bauxite) matches with 3 (Non-ferrous mineral), and D (Granite) matches with 1 (Igneous rock).

A slate is a type of metamorphic rock that is formed from the metamorphosis of shale or clay. Lignite is a type of sedimentary rock that is a low-grade coal. Bauxite is a non-ferrous mineral that is an important source of aluminum. And granite is an example of an igneous rock, which is formed from the crystallization of molten magma.