Opals come in a variety of colors, and they range from opaque to transparent. The most desirable opals are known as the precious opal. They have a special iridescent quality as you move, opal under light, and it shows a spectrum of colors.

Which words Provide the *best* clues remaining of iridescent?
“Variety, light, spectrum of colors”
B. “Opaque, quality, desirable”
C. “Transparent, variety, opals”
D. “Opals, special, precious”
*I think it’s a *

C. “Transparent, variety, opals”

The correct answer is A. "Variety, light, spectrum of colors" provide the best clues remaining of iridescent.

The words that provide the best clues remaining of iridescent are "variety," "light," and "spectrum of colors." The iridescent quality of opals refers to the way they exhibit a play of colors that change as you move them under light. So, the correct answer is "A. Variety, light, spectrum of colors."