Explanation:

Let’s break it down:

- Section 74 of the Indian Evidence Act defines public documents—like records from government bodies or official acts.

- Any document not included under this section is basically called a private document.

- Option 1, "semi-public documents," and Option 2, "quasi-public documents," aren't actual legal terms under the Evidence Act. You won't find those categories in the law—they're more like made-up names.

- Option 3, "private documents," is the correct term. Anything not public under Section 74 falls here.

- Option 4, "all the above," can’t be right, because only Option 3 makes legal sense.

So, here’s the answer:

Option 3 - private documents is correct.