The instrument that qualifies as both a percussion instrument and a wind instrument is the Dung Chen. The Dung Chen is a traditional Tibetan long trumpet made of metal, which serves as a wind instrument, but it also involves elements of percussion when played in certain contexts.
The Shofar is primarily a wind instrument used in Jewish religious practices, made from a ram's horn. The Steelpan drums are classified solely as percussion instruments, made from steel and played with mallets. Therefore, the Dung Chen is the correct answer for an instrument that fits both categories.