Explanation:

- Section 339 Cr. P.C.: Deals with the admission of evidence without formal proof in certain cases.

- Section 287 Cr. P.C.: Involves the consequences when a warrant is not executed properly.

- Section 388 Cr. P.C.: Pertains to the procedure for dealing with execution of sentences on escaping prisoners.

- Section 346 Cr. P.C.: This section is about the procedure when a case is not to be dealt with under Section 345. It allows a court to forward the case to the Magistrate having jurisdiction if it believes the case is serious.

Correct Answer: Section 346 Cr. P.C.