Explanation:

Let’s break down the Code of Civil Procedure sections you mentioned:

- Section 11: This one deals with res judicata. In simple terms, if a court has already decided a matter, you can't file the same suit again between the same parties. Basically, it bars further suits on the same issue.

- Section 12: This is about the bar to further applications, not suits. It just says you can't make multiple applications for the same relief in a court, if one has already been made.

- Section 13: This talks about when foreign judgments are conclusive in India.

- Section 16: This is all about where a suit concerning immovable property should be filed—nothing about barring further suits.

So the correct answer is:

Option:1, Section 11