Within medical devices industry, sales personnel less likely than support personnel to be enrolled in cheaper insurance plans
imposing stricter limits on medical services and requiring doctors to see more patients, and spend less time with each.
A. imposing stricter limits on medical services and requiring doctors to see more patients,
and spendWrong. "and spend" is not parallel.
B. that
impose stricter limits on medical services,
require doctors to see more patients,
and spend
Wrong. Not parallel. ..."insurance plans that impose..., require...., and spend....". The insurance plans cannot spend time with each patient.
C. that impose stricter limits on medical services and require doctors to see more patients, spending
Correct. "spending" modifies the previous clause with the subject doctors.
D. imposing stricter limits on medical services, requiring doctors to see more patients,
and spendingWrong. Modifier problem. The insurance plans cannot spend time.
E. that
impose stricter limits on medical services,
requiring doctors to see more patients
and spendingWrong. Not parallel.
Hope it helps.