Question : Select the most appropriate meaning of the given idiom.
Know like the back of one's hand
Option 1: to copy another's trade secrets
Option 2: to hit someone with the back of one's hand
Option 3: to have detailed knowledge of something
Option 4: to be unaware of the situation
Correct Answer: to have detailed knowledge of something
Solution : The correct answer is the third option.
Explanation : The idiom know like the back of one's hand, is used to express a high level of familiarity or detailed knowledge about a particular thing. In this case, the phrase like the back of one's hand is a simile, emphasising the idea that someone knows something as well as they know the back of their own hand. It implies a deep understanding or awareness of a subject, object, or situation.
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