6434. Radhey Shyam does unpaid work for the charity school.

✅ The correct answer is option B.
Honourable : bringing or deserving honour.

Honorary : (of an office or its holder) unpaid.

Honest : free of deceit; truthful and sincere.

Honorific : given as a mark of respect but having few or no duties.

Unpaid : (of a person) not receiving payment for work done.

Synonym of Unpaid is Honorary