Answer: Option B -- Most research underreports the number of gays and lesbians in a population
Step-by-step explanation:
National Bureau of Economic Research is a private, nongovernment, non-biased, economic research establishment/organization, which is created purposely to give clear/more understanding about how economy works in both private and public sectors, by passing information on economic research among public policymakers, business men and women, and also in academic environment. Most of their research about lesbian and gay underreports the number of gays and lesbians in a population, because they were unable to get the exact numbers of gays and lesbian as at that time.