The term ‘West Texas Intermediate’, sometimes found in news, refers to a grade of

West Texas Intermediate (WTI) is a grade of crude oil, so option A is correct. It is a light, sweet crude, meaning low sulphur content, and it serves as the benchmark for US oil prices, priced for delivery at Cushing, Oklahoma, the hub for NYMEX futures. Brent from the North Sea is the other major benchmark, which is why news reports often quote both.

Why the others fail:

• Bullion (B) means gold or silver in bulk form, traded as a precious metal, not an oil grade.
• Rare earth elements (C) such as neodymium and dysprosium are used in magnets and electronics. Their grades are not named after Texas oilfields.
• Uranium (D) is a nuclear fuel, traded as U3O8 concentrate, and is priced separately.

Core concept: benchmark crude grades and how they set global prices. Mains angle: India's crude import basket and how US shale output moves global prices.

Trap: candidates pick uranium or bullion because 'West Texas' sounds like a mining region. The term is an oil benchmark, not a mineral.