Select all that apply GDP is not a perfect way to measure economic activity because: Multiple select question. it cannot measure the value of leisure time. it does not account for changes in product quality. it ignores activities that occur outside formal markets. it does not account for productivity changes. goods and services that are not bought and sold in a market are not included in GDP. it does not provide a gauge of unemployment. it does not account for the depletion of natural resources. it does not measure wage changes