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

Invincible means too strong to be defeated; unbeatable.

• Correct answer - unbeatable: it has the same meaning as Invincible.
• weak: lacking strength - wrong, it does not mean the same as Invincible.
• vulnerable: open to attack or harm - wrong, it does not mean the same as Invincible.
• illogical: not following sound reasoning - wrong, it does not mean the same as Invincible.