Correct Answer: Fuss

Solution : The correct option is the fourth option.

Fuss refers to a state of agitation, typically over a trivial matter. It involves being overly concerned or agitated about something minor or unimportant.

The meanings of the other options are as follows:

• A storm means a violent disturbance of the atmosphere, not directly related to a state of agitation over a trivial matter.
• Harmony means a state of peace, agreement, or pleasantness, opposite in meaning to agitation.
• Worry means to feel concerned or anxious about something.

Therefore, the correct answer is a fuss.