Select the most appropriate idiom for the given group of words.
To stop fooling around and do something in the way it should be done

Correct option is D

The correct option is (D).

Explanation: Option (D) is the correct meaning of the given group of words.
Get your act together: To organize your life or work in a better way, so that you can achieve what you want; to start behaving in a more professional or effective manner. (अपने व्यवहार में सुधार करना / व्यवस्थित होना)
Example: If you want to pass the exam, you really need to get your act together and start studying every day.

Other related idioms and their meanings:

• Jump on the bandwagon: To join others in doing something that is becoming fashionable or popular.
• Get a taste of your own medicine: To be treated in the same unpleasant way that you have treated others.
• Put your foot in your mouth: To say something that causes someone else to feel embarrassed or hurt.