'One proven way to beat an enemy is to find his Achilles heel.' What does finding Achilles heel mean?

Correct option is B

The term Achilles heel refers to a person’s weak spot or vulnerability, despite overall strength or resilience. The phrase originates from Greek mythology, where Achilles, a great warrior, was invulnerable except for his heel. A fatal arrow struck his heel, leading to his death.
This metaphor is now used widely to indicate a critical flaw or weakness that could lead to downfall. Identifying an enemy's Achilles heel means uncovering their most vulnerable point to gain an advantage.
Information Booster:
1. The phrase originates from the Iliad by Homer.
2. Symbolizes a single point of vulnerability in an otherwise strong individual.
3. Used metaphorically in various fields like business, sports, and politics.
4. It highlights the importance of knowing and addressing weaknesses.
5. Often paired with strategies to mitigate or exploit the vulnerability.