Answer:
B. Referred pain
Explanation:
Referred pain is when pain in one part of your body is caused by pain in another part of your body.
The pain that Ms. Caroll is experiencing in her gallbladder is causing her to experience pain in her right shoulder blade.
Also, when the gallbladder is inflamed and swollen, it irritates the phrenic nerve which runs from the abdomen, through the chest, and into the neck. This causes pain in the right shoulder blade.
Hope this helps.