What two types of attachments can be used with a fall arrest system?

The correct choice refers to the use of hitch and carabiner as components of a fall arrest system, which are standard attachments designed to enhance safety while working at heights.

A hitch is a versatile knot used in various applications, providing a secure anchor point. It's engineered specifically for safety in fall protection systems, ensuring that when properly tied, it can handle tension and minimize slippage, which is critical during a fall.

The carabiner is a strong, metal buckle that can easily attach tools or safety lines to harnesses, lifelines, and anchor points. Carabiners are designed for quick connections while also ensuring a reliable attachment that withstands the weight and forces one might experience in a fall situation. They often feature locking mechanisms to enhance security, preventing accidental detachments.

Attachments in the context of fall arrest systems must be robust and designed to support significant weight while minimizing the risk of failure. Therefore, the combination of hitch and carabiner provides a reliable means of securing oneself to an anchor, ensuring the effectiveness of the fall arrest system. Other options, while they may represent forms of attachment methods, do not specifically align with the standard components used in fall protection systems recognized for their safety and reliability.