Final answer:
The sentence 'Exercise and good nutrition promote healthy aging' is already in active voice, where 'exercise and good nutrition' are the subjects actively promoting healthy aging. Therefore, it doesn't need to be rewritten, and it exemplifies the use of active-voice verbs to create a clear, concise message.
Step-by-step explanation:
To rewrite the sentence "Exercise and good nutrition promote healthy aging" in the active voice, one should ensure the subject of the sentence performs the action directly. The sentence given is already in the active voice, where 'exercise and good nutrition' are the subjects that perform the action of promoting. Therefore, in its current form, 'exercise and good nutrition promote healthy aging,' the sentence is correctly using active-voice verbs and does not need to be rewritten.
Using active voice is important as it creates stronger, clearer, and more concise sentences. Additionally, it is crucial to recognize that adopting a healthy lifestyle with regular physical exercise and proper nutrition is the key to minimize the impact of aging on the body. Studies support that such a lifestyle can slow down the deterioration associated with old age and improve the chances of remaining healthy and active well into one's senior years.