What is the central idea of this text?
A) Engineering and math are necessary for the design and safety of race cars.
B) NASCAR engines are built out of lightweight materials that are still incredibly strong.
C) Much of the math behind racing involves simple counting.
D) Calculating friction and banking is an important way engineering is used in racing.
What is the central idea of this text?
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The correct answer is A) Engineering and math are necessary for the design and safety of race cars.
Explanation: The central idea often encompasses the overarching theme or main point of a text. In this case, option A summarizes the main focus on the importance of engineering and mathematics in creating safe and effective race cars, suggesting that both disciplines are critical in the racing industry. Options B, C, and D provide specific details but do not capture the broader concept as effectively as A does.