Explanation:

- In Kedar Nath v. State of Bihar, the Supreme Court upheld the constitutional validity of the sedition law.

- This law is defined under Section 124A of the Indian Penal Code (IPC).

- Section 124A pertains to actions that attempt to bring hatred or contempt towards the government established by law through words, signs, or visible representation.

- Section 128 of IPC addresses public servant resistance.

- Section 136 of IPC deals with harboring a deserter.

- Section 138 of IPC involves abetment in desertion.

Correct Answer: Option 1 - Section 124 A of IPC