<prompt> True about total fertility rate isSensitive indicator of family planning achievementCompleted family sizeNumber of live births per 1000 married women in reproductive age groupAverage number of girls born to a woman  <response>: Standardized index for fertility level. Average no. of children a woman would bear in her reproductive life span; Also known as Period Total Fertility Rate. Gives magnitude of approximately completed family size no. of alive children in a family. Obtained by summing single-year age-specific rates at a given time. TFR is a synthetic rate: Is not actually counted, as this would involve waiting until women complete childbearing. 