The correct answer is D. The flip phone became obsolete as newer technology arrived on the market.
Step-by-step explanation:
Context clues are hints, words in a sentence provide about the meaning of an unknown or difficult word and that help the reader to understand the word without looking at it in a dictionary or using other strategies. In this case, the word "obsolete" which means "no longer used" or "out-of-date" is more clearly defined through context clues in the last sentence "The flip phone became obsolete as newer technology arrived on the market" because this suggests an object becomes "obsolete" when there is new technology and therefore the object is no longer use which is almost the same that the definition of the word.