Ron placed a grilled cheese sandwich, a sneaker, a pinecone, and a dog collar together on a scale. The sandwich weighs 0.462 lb, the sneaker weighs 290.87 g, the pinecone weighs 0.0000453 ton, and the dog collar weighs 0.246 kg. There are 2.20462 pounds in one kilogram. How many ounces do all of these objects weigh in total?

Convert each weight to pounds, then add: the sandwich is 0.462 lb; the sneaker is 0.29087 × 2.20462 ≈ 0.6412 lb; the pinecone is 0.0000453 × 2,000 = 0.0906 lb; and the collar is 0.246 × 2.20462 ≈ 0.5423 lb. Together they weigh about 1.736 lb, and 1.736 × 16 ≈ 27.78 ounces. The correct choice is 27.78 oz.

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