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What must be ensured about fixtures mounted on trees?

  1. They should not exceed 10 pounds

  2. They must be weatherproof

  3. They must be bonded to the ground

  4. They should not affect tree stability

The correct answer is: They should not affect tree stability

Fixtures mounted on trees should not affect the stability of the tree. When installing any fixture, it is essential to consider the health and structural integrity of the tree. This means ensuring that the weight and placement of the fixture do not compromise the tree's ability to thrive or its overall stability. A fixture that adds too much weight or is improperly secured could damage the tree or create safety hazards, such as falling branches or the tree becoming top-heavy. In this context, other factors such as weatherproofing and weight limits might be essential for specific installation practices, but they do not address the broader concern of the tree’s overall well-being and structural stability, which is paramount for ensuring both the fixture's support and the health of the tree. Thus, maintaining the tree’s stability is a critical consideration when mounting any fixtures on its branches.