The correct option is A Impairment of the digestion of fat
Removal of the gallbladder will severely inhibit the digestion and absorption of fats (triglycerides, cholesterols, phospholipids) and other fat-soluble substances. The gallbladder stores and secrete bile. Without bile the there is no formation of mixed micelles. With the reduction of bile due to the inability to store it, the surface area of fat is greatly reduced. This reduces digestion and thus absorption of fats. Thus, the correct answer is option A.