Key Concept: Loose housing keeps dairy cattle free-moving in an open paddock with a shed, instead of tying them in stalls.
Why it's correct: Free movement gives animals natural exercise, which improves circulation, reduces lameness, and boosts fertility and heat detection since animals interact openly — so better exercise for animals is the real advantage.
Why others fail: Loose housing is actually cheaper to build, easier for detecting estrus (not harder), and needs LESS labour than tied-stall cleaning — the opposite of the three wrong options.