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Final answer:The bone disorder characterized by excessive and haphazard bone deposit and resorption is b) Paget's disease. It leads to bones that are misshapen and more brittle over time. It's distinct from osteoporosis, osteomalacia, and osteoarthritis which affect the bones and joints differently.Explanation:The bone disorder characterized by excessive and haphazard bone deposit and resorption is B) Paget's disease. This condition interferes with the body's normal recycling process, in which old bone tissue is gradually replaced with new bone tissue. Over time, Paget's disease can lead to bones that are misshapen and brittle. Osteoporosis, another condition mentioned, is characterized by an increase in bone fragility and risk of fracture due to a reduction in bone mass. Osteomalacia involves the softening of the bones, usually caused by a severe vitamin D deficiency. Osteoarthritis is a joint disorder that results from cartilage degeneration rather than being directly related to bone tissue itself....