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

which best describes what a market index does?\n○ an index measures market performance.\n○ an index measures economic trends.\n○ an index measures growth.\n○ 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 gives an overall picture of how well the market or a particular sector is performing. Economic trends are broader and not the main focus of a market - index. Growth is a part of performance but not as comprehensive. A market index does not measure a single - stock performance.
Answer:
An index measures market performance.