About three-fourths of world's cobalt, a metal required for the manufacture of batteries for electric motor vehicles, is produced by

1. The question asks to identify the country that produces about three-fourths (75%) of the world's cobalt. 2. Cobalt is a critical metal used in the manufacture of lithium-ion batteries for electric motor vehicles. 3. The Democratic Republic of the Congo (DRC) is overwhelmingly the world's largest producer of cobalt, accounting for approximately 70-75% of global production in recent years. 4. Argentina, Botswana, and Kazakhstan are not major producers of cobalt on the scale of the DRC. 5. Therefore, the Democratic Republic of the Congo is the correct answer.