Final answer:
Submarine nets were not used by the British as a tactic to prevent German invasion, unlike observation balloons, floating fortresses, and barrage balloons.
Explanation:
Submarine nets were not a tactic used by the British on the home front to prevent German invasion during World War II. Instead, the British utilized observation balloons, floating fortresses, and barrage balloons to defend against potential German attacks.
Learn more about British tactics to prevent German invasion during World War II here:
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