Which type of protective layer is used to shield cables from severe physical damage?

The protective layer that is specifically designed to shield cables from severe physical damage is the armor. Armors are robust protective layers made of materials like metal or reinforced plastics that provide significant resistance to impact, abrasion, crushing, and other forms of mechanical damage. This makes them essential for cables that are installed in environments where they might be subjected to harsh conditions, such as construction sites or industrial settings.

In contrast, the other options offer varying levels of protection but are not designed for severe physical damage. Plastic wrap is more suited for lightweight protection and does not provide the structural integrity needed in harsh environments. Rubber coatings can offer protection against moisture and mild abrasion but do not have the strength required for severe impact situations. Thatched coverage, which is typically associated with natural materials for insulation or aesthetic purposes, would not offer the necessary physical protection for cables. Thus, armor stands out as the most effective choice for safeguarding cables against significant physical harm.