The sentence that contains an incorrect shift in verb mood is:
"Let dinner and dessert get digested, and then retire to the bedroom."
Step-by-step explanation:
The phrase "let dinner and dessert get digested" uses the imperative mood, which gives a command or instruction. However, the rest of the sentence is in the indicative mood, which makes a statement or asks a question. To maintain consistency in verb mood, the sentence could be revised to say: "Wait for dinner and dessert to digest, and then retire to the bedroom."