题目选项分析

Unlike psychiatrists, who are trained as medical doctors, psychologists have historically been forbidden to prescribe drugs for their patients, but in 2002 New Mexico began granting prescribing privileges to licensed, doctoral level psychologists who complete an additional training and certification program.

Unlike psychiatrists, who are trained as medical doctors, historically psychologists have been forbidden from prescribing their patients drugs, but in 2002 New Mexico began to grant the privilege of prescribing to licensed, doctoral level psychologists who complete an additional training and certification program.