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Consider the following structures I. Muscular pump II. Blood III. Large-diameter vessels IV. Capillaries

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Consider the following structures

I. Muscular pump

II. Blood

III. Large-diameter vessels

IV. Capillaries

Which of these would be found only in animals having a closed circulatory system?

(A) I

(B) I and II

(C) II, III, IV

(D) IV

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Correct Option: (D) IV

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