Choose the correct meaning for the idiom.
 To give the game away
a. To lose the game
b. To give a walk-over in a game
c. To reveal the secret
d. To play the game badly

Hint: The idiom ‘to give the game away’ is used to refer to the situation of unknowingly disclosing some very valuable information.

Complete step by step solution: In the given question, we have been given an idiom and we need to choose the option that explains its meaning in the best way.
To do this, let us first understand what the word idiom means. An idiom is a group of words that together expresses a meaning that is different from its literal meaning.
The idiom ‘to give the game away’ refers to the action or situation of unknowingly letting others know highly valuable information. Do not confuse this meaning with its literal meaning of giving a game to someone, instead, it is just a form of expression.
Let us use this idiom in a sentence to understand the idiom better: Tom was almost about to give the game away when the teacher questioned him.
Now, we will try to understand the options given and select a suitable option.
Options ‘A’, ‘B’ and ‘D’ are incorrect as they use the literal meaning of the idiom to explain its meaning, which is incorrect.
Therefore, the correct answer is option ‘C’, to reveal the secret, as it has the exact same meaning as that of the given idiom.

Note: For questions related to idioms it is necessary to know their meanings, so it is advisable to learn a list of idioms and their meanings to attempt such questions with ease.