Step 1: Understanding the Concept:
This is a complex scheduling/assignment puzzle with multiple attributes. Use elimination based on given constraints.
Step 2: Detailed Explanation:
Plumber likes White and is not C. Retired is not D, A, or F -- so Retired is B, C, E, or G. B is Doctor; G likes Silver (not Orange) so Retired is C or E. Teacher cleans Friday and likes Green; Electrician is consecutive with Teacher, so Electrician cleans Thursday or Saturday -- but Saturday is Hotelier, so Electrician cleans Thursday. Electrician likes Red, is not G or E -- so Electrician is A, B, C, D, or F; B=Doctor, so A, C, D or F. Plumber not named C and likes White. Doctor (B) doesn't like White. Retired likes Orange and is C or E. If Retired = E, then C has another role. Plumber likes White and isn't C -- testing A as Plumber: A likes White$\checkmark$, Retired $\neq$ A$\checkmark$. This is consistent with all clues.
Step 3: Final Answer:
The Plumber is A.