Which attribute would be a primary sex characteristic for a male?

The odds of smoking are greater for older women who:

a. are widowed. c. earn more money. b. who do not live near family members. d. have less income and lower education.

________ is the consistent, unbroken tracking by the eyes that serves to maintain focus on a moving visual target

a. Visual accommodation c. Smooth visual pursuit b. Vergence d. Visual acuity