Dependent Dropdown List
Cascading select questions are sets of questions whose options depend on the response to a previous question. For example, your form may first ask the region where a respondent is from, and then in the next question list only the towns and villages of that region.
Download Example>>https://docs.google.com/spreadsheets/d/10gpBV6YaYGx1i367hyW-w1Ms9tkUQnCx0V8YsdwYxmk/