Correct Answer: Mischievious

Solution : The correct choice is the fourth option .

The correct spelling is mischievous. It means causing or showing a fondness for causing trouble in a playful manner.

The meanings of the other options are as follows:

• Acquiesce means to accept something reluctantly but without protest.
• Artificial refers to something made or produced by human beings rather than occurring naturally.
• Conscientious describes a person who is diligent, careful, and meticulous in their work or duties.