GRE Vocabulary Builder

Answer: Choice (B) is correct.

In the first half of the analogy, a carat is the unit of measure used to determine weight, as in gold and diamonds. So, look for the pair that has the same relationship. In choice (A), an ampere is used to measure electric current, not capacity. In choice (C), a league is a measurement of distance, typically nautical distance. It has nothing to do with perspective, so eliminate that choice. In choice (D), a stone is an arcane measurement of weight; a stone is equal to 14 pounds. Therefore, the correct choice is (B). A fathom is the unit of measure used to determine depth.