Sunil is accused of a burglary in Nagpur. Which of the following confessions by him can be proved…

Only "His confession made of his own accord to a childhood friend at a temple" can be proved: no person in authority caused it (section 22), and it was not made to the police or in police custody (section 23). A confession to a police officer is barred by section 23(1), and one made in police custody without a Magistrate present is barred by section 23(2). A confession caused by a promise from the investigating officer is irrelevant under section 22.