ablutions=the act of washing oneself.
mementos=an object kept as a remainder or souvenir of a person or event.
protocols=the official procedure or system of rules governing affairs of state or diplomatic occasions.
manacles=a metal band, chain, shack for fastening someone's hands or ankle.
Therefore, the answer is mementos. I suspect that they put manacles as a tricky answer since they mentioned about the bracelet. But manacles meant to fasten someone's hands or ankle with chain like prisoners.
Hopefully, that helps you.