Final answer:
The penile muscles connected to the perineal body are the bulbospongiosus and ischiocavernosus muscles (option A). These muscles play a role in ejaculation and maintaining an erection.
Step-by-step explanation:
The muscles of the penile region that are attached to the perineal body include the bulbospongiosus and ischiocavernosus. These muscles are part of the deep muscles of the perineum and play a role in ejaculation. The bulbospongiosus muscle surrounds the bulb of the phallus and contracts during ejaculation, helping to propel semen through the urethra. The ischiocavernosus muscle maintains an erection by compressing the veins that drain blood from the phallus.
Hence, the answer is option A.