Use the excerpt to answer the question.
Opals come in a variety of colors, and they range from opaque to transparent. The most desirable opals are known as the precious opals. They have a special iridescent quality. As you move the opal under light, it shows a spectrum of colors.
Which words provide the best context clues for the meaning of iridescent?
(1 point)
O "opals, special, precious"
• "variety, light, spectrum of colors"
• "transparent, variety, opals"
O "opaque, quality, desirable"