Step 1: Understanding the sentence.
The sentence talks about the popularization and subsequent sales of seat belts. We need to find the correct phrases that complete the meaning logically and grammatically. - "Caught on to" is the correct phrase to indicate that the public "started to understand or accept" the idea of safety belts. - "Skyrocketed" is the appropriate verb to describe something that increases dramatically, such as the sales of seat belts. Step 2: Analyzing the options.
- (A) "caught light of...boomeranged": Incorrect. "Caught light of" is not a proper phrase, and "boomeranged" doesn’t fit the context of sales growth. - (B) "caught up with...stopped": Incorrect. "Caught up with" doesn’t fit in this context, and "stopped" doesn’t align with the idea of increasing sales. - (C) "caught sight of...stabilised": Incorrect. "Caught sight of" implies noticing something, but we need "caught on to" for acceptance, and "stabilised" doesn't fit with sales increasing. - (D) "caught on to...skyrocketed": Correct. "Caught on to" fits with the idea of the public accepting the safety belts, and "skyrocketed" appropriately describes sales dramatically increasing. - (E) "caught up on...nosedived": Incorrect. "Caught up on" is not the right phrase here, and "nosedived" implies a decline, which is contrary to the increasing sales. Step 3: Conclusion.
The correct answer is (D) caught on to...skyrocketed, as it logically completes the sentence with the correct phrasing and meaning.