Correct Answer: Similarity

Solution : The correct choice is the first option.

Variety refers to the quality or state of being different or diverse. In this context, it represents a range of different things. The antonym similarity implies the state of being alike or having a resemblance.

The meanings of other options are as follows:

• Diversity: This refers to the state of being diverse; variety. It indicates a range of different things, much like "variety."
• Medley: This is a mixture or assortment of different things; often used to describe a musical piece composed of various tunes.
• Fusion: This is the process or result of joining two or more things together to form a single entity. It often implies a blend of diverse elements.