Answer: A hard commodity.

Commodities are categorized into two types: 'hard' commodities, which are mined or extracted (e.g., copper, crude oil), and 'soft' commodities, which are agricultural products grown over time (e.g., livestock, grains, coffee). Crude oil is extracted and therefore classified as a hard commodity. Options A and C are incorrect because crude oil does not fall under the soft commodity category.

Author: LeetQuiz Editorial Team