Due to fat malabsorption, clients with celiac's disease do not absorb:

Clients with celiac disease experience malabsorption primarily due to damage to the villi in the small intestine, which impairs their ability to absorb various nutrients effectively. Fat-soluble vitamins, including vitamins A, D, E, and K, require dietary fat for their absorption. Since individuals with celiac disease struggle with fat absorption due to the disease's impact on the intestine, this directly leads to difficulty in absorbing these essential vitamins. Therefore, the correct answer highlights that the inability to absorb fat due to malabsorption can lead to deficiencies in these fat-soluble vitamins.

Additionally, while amino acids, carbohydrates, and vitamin B12 are also important aspects of nutrition, they can be absorbed through different mechanisms which may not be as directly impacted by the malabsorption of fats. In particular, amino acids are derived from proteins, which can still be broken down and absorbed even if fat absorption is compromised. Carbohydrates have their own dedicated absorption pathways that do not rely solely on fat, making them less affected in this scenario as well. Vitamin B12, while it requires intrinsic factor for absorption, does not depend on fat for its uptake. Thus, the focus on fat-soluble vitamins as the primary concern in the context of fat malabsorption