Question

the 180-degree system is

a restriction on artistic freedom.

a rule that can never be violated.

an obsolete principle held over from the early days of filmmaking.

a guideline for directors to carefully work around.

a convention that can be broken.

Explanation:

The 180-degree system is a core filmmaking convention that maintains spatial continuity between shots. It is not an absolute rule, nor is it obsolete or an inherent restriction; instead, it is a guideline that can be intentionally broken for creative effect when done purposefully.

Answer:

a convention that can be broken.