which best describes what a market index does? an index measures market performance. an index measures…

which best describes what a market index does? an index measures market performance. an index measures economic trends. an index measures growth. an index measures the performance of a single stock.
Answer
Brief Explanations:
A market - index is a statistical measure that reflects the performance of a group of stocks or other securities representing a segment of the market. It is mainly used to gauge overall market performance rather than economic trends in general, growth in isolation, or the performance of a single stock.
Answer:
An index measures market performance.