What are three acceptable methods for securing unterminated ends of a wire rope static line?

The correct choice emphasizes the use of suitable wedge sockets, three double saddle clamps, and a machine splice with a thimble eye, which are all established and effective methods for securing unterminated ends of wire rope static lines.

Using suitable wedge sockets provides a secure and reliable method of attaching wire ropes, ensuring that the load is distributed evenly and that the connection is robust under tension. Three double saddle clamps serve to anchor and stabilize the ends of wire ropes effectively, offering additional security by providing multiple points of contact to prevent slippage. A machine splice with a thimble eye is another vital technique, as it maintains the integrity of the wire rope while enabling easy connections to other rigging components, safeguarding against wear and abrasion.

The other options consist of methods that either lack the necessary strength or reliability needed in rigging applications or are not standard practice for securing wire rope static lines.