Final answer:
To improve the paragraph, varying the sentence lengths would enhance the flow. Regarding the cheetah's speed, its limb placement and body design, including long legs and flexible spine, contribute to its agility and acceleration. The correct answer is option b.
Step-by-step explanation:
To improve the given paragraph about cheetahs, the best change would be to vary the sentence lengths to add better flow. While all of the statements about the cheetah's physical characteristics are relevant and interesting, the similar structure of each sentence makes the paragraph sound monotonous. To engage readers and make the information more dynamic, mixing short and long sentences can be very effective. For instance, by combining some of the measurements into a single sentence or adding an introductory sentence, we add variety and maintain reader interest.
Regarding the cheetah's speed, observing the cheetah's body provides insights. The cheetah's limb placement is key to its incredible speed. With long, slender legs, a flexible spine, non-retractable claws, and a long tail that helps for balance, the cheetah is built like the perfect sprinter. Each physical feature contributes to its ability to accelerate quickly and reach top speeds, keeping its body stable and its gait efficient.