Correct Answer: worthless

Solution : The correct choice is the third option.

In the context provided, the sentence suggests that the symbols had no utility or value to the person. Therefore, the most appropriate synonym is worthless , indicating that the symbols held no value or usefulness for him.

The meanings of the other options are as follows:

• Reachable means able to be reached or achieved.
• Valuable means having great worth or importance.
• Successful means achieving a desired aim or result.