The correct answer is A. Galena.
Galena is the most important ore of lead. It is a lead sulfide mineral with the chemical formula PbS. Galena is a black, lead-gray, or silver-gray mineral with a metallic luster. It is the most common lead ore and is found in many parts of the world. Galena is an important mineral for the production of lead, which is used in a variety of applications, including batteries, ammunition, and solder.
Magnetite is a black, iron oxide mineral with the chemical formula Fe3O4. Magnetite is a naturally occurring magnet and is used in a variety of applications, including compasses, motors, and generators.
Pyrolusite is a black, manganese dioxide mineral with the chemical formula MnO2. Pyrolusite is an important ore of manganese and is used in a variety of applications, including batteries, steelmaking, and glassmaking.
Siderite is an iron ore mineral with the chemical formula FeCO3. Siderite is a common mineral and is found in many parts of the world. It is used in the production of iron and steel.