Correct answer: option (2) granite

Andesite -
A fine grained intermediate volcanic igneous rock characterized by the presence of oligoclase or andesine.

Gabbro –
A coarse grained basic igneous rock consisting of basic plagioclase, a pyroxene and olivine in substantial amounts. Hornblend, biotite and quartz may occur in accessory amounts, and magnetite and ilmenite are common accessories.

Granite -
Consist of essentially Quarts, alkali feldspar and mica (biotite and muscovite) and amphiboles. Accessory minerals present are apatite, zircon and magnetite.

Basalt- Is a fine grained dark colour volcanic rock composed mainly Calc plagioclase and pyroxene (usually augite) with or without olivine. Magnetite is important accessory.

Therefore the rock is granite. Because, it has main minerals of K-feldspar, quartz and amphibole.