Explanation:

- In Indira Gandhi v. Raj Narain (1975), the Supreme Court discussed the "Basic Structure" doctrine.

- Free and Fair election was specifically recognized as part of the Basic Structure.

- Judicial Review was *already* considered part of the Basic Structure in earlier cases (like Kesavananda Bharati v. State of Kerala), not specifically in Indira Gandhi v. Raj Narain.

- Both (a) & (b) is incorrect here because only "Free and Fair election" was emphasized in this case.

- None of these is not correct because "Free and Fair election" was upheld.

Option:1 - Free and Fair election