Final answer:
Ceftriaxone IM in combination with oral doxycycline for seven days is the most likely prescription for treating gonorrhea, according to CDC guidelines.
Step-by-step explanation:
The health care provider is most likely to prescribe ceftriaxone IM plus doxycycline for seven days by mouth for a client diagnosed with gonorrhea. This combination therapy is recommended because Neisseria gonorrhoeae, the bacterium causing gonorrhea, has developed resistance to many antibiotics, including fluoroquinolones. The Centers for Disease Control and Prevention (CDC) recommends a dual treatment regimen to also cover potential co-infection with Chlamydia trachomatis. Therefore, the regimen consisting of ceftriaxone plus doxycycline is considered the most effective treatment.