Explanation:

Here’s the thing:

- That phrase—"work expands to fill the time available for its completion"—is all about how tasks can stretch out if you let them.

- This is known as Parkinson's Law.

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Option 4 — Parkinson’s Law (THE RIGHT ANSWER)

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- Chaos theory is about how even tiny changes in complex systems can have big, unpredictable effects. It’s more about unpredictability, not office procrastination.

- Fordism relates to efficient mass production—the old-school assembly line. Nothing to do with time-wasting at work.

- Peter’s Principle is about people getting promoted till they reach a job they’re not good at. Again, doesn’t match our statement.

- So, in short, when people say “work expands to fill the time available,” they’re talking about Parkinson’s Law, not any of the others.

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