Answer:
a. Polyps will move to the dependent portion of the gallbladder with a change in patient position.
Explanation:
Polyps in the gallbladder do not typically move with changes in patient position. They remain attached to the gallbladder wall by a stalk (option b). Polyps are usually non-shadowing (option c) and can be categorized as either adenomatous or cholesterol polyps (option d).