Concept:
Idioms are expressions whose meanings differ from the literal meanings of the individual words.
Step 1: Understand the idiom.
The idiom:
\[
\text{“A wild goose chase”}
\]
means a useless or hopeless pursuit.
Step 2: Check the options.
• Foolish and useless enterprise → correct
• To hunt → incorrect
• A violent chase → incorrect
• To speak harshly → incorrect
Step 3: Choose the correct meaning.
Thus, the idiom means:
\[
\text{Foolish and useless enterprise}
\]
Step 4: Conclusion.
Hence, the correct answer is:
\[
\boxed{\text{Foolish and useless enterprise}}
\]