copy below then go to formulas-> Name Manager---> select New --> give it a name as DROPDOWN in source box paste
=INDEX(Data!$C$2:$C$13,MATCH(Main!$B2,Data!$B$2:$B$13,0)):INDEX(Data!$C$2:$C$13,MATCH(Main!$B2,Data!$B$2:$B$13))
then select the range for data validation --> go to data--> data validation--> List in Source box typr =DROPDOWN
Bookmarks