Which of the following words is closest in meaning to “Tether”?

Tether means a rope or chain that restrains an animal.

• Correct answer - rope or chain: it has the same meaning as Tether.
• crow-bar: an iron bar for prising things open - wrong, it does not mean the same as Tether.
• pulley: a wheel used to lift loads - wrong, it does not mean the same as Tether.
• rubber ball: a bouncing toy ball - wrong, it does not mean the same as Tether.