Which of the following was the most serious unintended negative effect of china's "one-child policy"?

a. the sharp reduction in fertility rates
b. the reduction of family size, and thus the labor pool, in rural farming families
c. the devaluing of female children
d. the rewarding of families who had only one child

Technician a says the harmonic balancer may be attached to the crankshaft using a woodruff key and center bolt. technician b says the harmonic balancer may be attached to the crankshaft using a square key and center bolt. who is correct? choose one answer. a. technician a b. technician b c. both technician a and technician b d. neither technician a nor technician b