Explanation:

Here’s the thing—when we talk about the main principles of succession, these are the usual suspects:

- Rule of representation: This means heirs inherit by standing in the place of a deceased ancestor—so, if a parent dies, the child steps into their spot in line.

- Rule of exclusion: Simply put, if someone higher up in the succession line is alive, the next in line is left out. So, closer relatives exclude more distant ones.

- Rule of primogeniture: Basically, the oldest child (usually the eldest son in traditional systems) takes priority over the others.

So, if you’re asking which is correct, all three are core principles.

Option 4: All of these is the right choice.