Which of these were traded along the silk road?
fabrics and diseases
potatoes and technologies
pepper and religions
carpets and coffee beans

Pepper and religions.
Although technologies were also traded along the silk road, Indian spices and the Buddhist religion was transported along the Silk Road. Under the Mongolian Silk Road, Islam was also traded.

I might be wrong, but there were multiple things in multiple answers that were traded along the silk road. This question should be more precise :(