An animal transport van has a weight limit of 5,000 pounds.

<h2><u>Horse</u> <u>and</u> <u>Bull</u></h2>
Explanation:
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Bull = 2,480 pounds
Hippo = 3,865 pounds
Horse = 2,048 pounds
Polar bear = 1,750 pounds
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Solution:</h2>
Bull and Hippo = 6,345 pounds
Bull and Horse = 4,528 pounds
Bull and Polar Bear = 4,230 pounds
Hippo and Horse = 5,913 pounds
Hippo and Polar Bear = 5,615 pounds
Horse and Polar Bear = 3,798 pounds
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As you can see the weight of the Horse and Bull is 4,528 pounds (<u>which is the </u><u>closest</u><u> number to 5,000</u>)
Therefore, the animal pairings could the van safetly carry are *<em><u>Horse and Bull</u></em>* (4,528 pounds)
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<h2>I hope this is what you looking for</h2>