Final answer:
Kinder Eggs (chocolate eggs with toys inside) are prohibited from being imported into the United States due to their potential choking hazard for children as per FDA regulations.
Step-by-step explanation:
The prohibited item that cannot go to the USA from the options given is c. Kinder Eggs (chocolate eggs with toys inside). Kinder Eggs are banned because the toys inside can be a choking hazard for children. The U.S. Food and Drug Administration (FDA) imposes strict regulations on food that contains non-nutritive objects, making it illegal to import or sell Kinder Eggs in the United States. On the other hand, while dairy products may have restrictions depending on their origin and health certifications, they are not universally banned. Prescription medications can be brought into the USA with proper documentation and in limited quantities for personal use. Electronics are also allowed, but they may be subject to safety regulations or tariffs.