What index is utilized to analyze item sales and compare demand between items?

The correct choice is based on the concept of measuring how well items are selling and assessing their demand relative to each other. Popularity, in this context, refers to analyzing sales data to identify which items are in high demand and which are not. This can be achieved by looking at sales figures, customer reviews, or trends in consumer behavior, allowing businesses to understand which products are favored by customers and make informed decisions regarding inventory and marketing strategies.

The other options, while relevant in other contexts, do not directly address the specific need for comparing demand between items through sales analysis. Benchmarking is typically used for measuring performance against industry standards rather than item sales. Performance metrics may evaluate broader organizational effectiveness or employee productivity instead of focusing specifically on item popularity. Utilization often refers to how efficiently resources are used rather than analyzing sales data across different products. Thus, popularity is the most appropriate choice for analyzing item sales and comparing demand between items.