Generate a questionnaire that could be used for collecting the given data.
Gender
1) What is your gender?
  a) Male 
  b) Female 
  c) Non-binary 
  d) Prefer not to say
Complete the following task based on the instruction and optional input provided.### Instruction:
Generate a questionnaire that could be used for collecting the given data.

### Input:
Gender

### Output:
1) What is your gender?
  a) Male 
  b) Female 
  c) Non-binary 
  d) Prefer not to say