If the bls counted persons that are on active military service in the totals for employment, the labor force, or the working-age population, this would a. decrease the number of persons in the labor force. b. decrease the measured unemployment rate. c. decrease the number of persons in the working-age population. d. decrease the measured labor force participation rate.

B. decrease the measured unemployment rate.

Explanation:

                 The full form of BLS is Bureau of Labor Statistics. It is a United States department of Labor Statistics, which is an important federal department which works on the labor statistics labor economics.

                 Unemployment rate is the percentage or amount of person who is not employed in the total work force.

                Thus if the Bureau of Labor Statistics counted the number of persons who are on active military service in the totals for employment of the State, then the unemployment rate will decrease. This implies that more number of people in the population are employed in the military service.

Thus the answer is

B. decrease the measured unemployment rate.