The item depicted in the image that provides a secure point of attachment for lifelines, lanyards, or deceleration devices is an Anchor or Anchor Connector. Anchors are specifically designed secure attachment points in fall protection systems to which lifelines, lanyards, or deceleration devices are connected to ensure safety when working at heights.

Connectors are used to link components like the harness to the anchor, but the secure point itself is called an anchor or anchor connector. A full-body harness is worn by the worker but does not serve as the secure attachment point.

Thus, the correct identification for the secure attachment point in the image is an Anchor or Anchor Connector.