Final answer:
The most significant information to gather from a client with osteomalacia is their dietary intake of vitamin D, as it is crucial for bone health and the proper absorption of calcium, which is vital for preventing demineralization of bones.
Step-by-step explanation:
When taking a client's history with a diagnosis of osteomalacia, the most significant information to gather is b. Dietary intake of vitamin D. Osteomalacia in adults is often caused by a deficiency in vitamin D which leads to demineralization of bone. Since vitamin D is crucial for the absorption of calcium from the small intestine, insufficient levels can result in a depletion of calcium stores in the skeletal system, leading to weakened and fragile bones. Additionally, insufficient vitamin D after several pregnancies is a particular concern for women. Dietary supplementation with foods like eggs, cod liver oil, and liver, which are rich in vitamin D, can help recover from this condition.