how long have you spent on make decision?
the participant answer could be various, the suffix could be sencond, minitute, week, year.
i creat a text or number type question, if the suffix is second, the partipant take 1 week will input 604800,it's not a good solution.
how to creat multi suffix to let partcipant select?
the answer will be calculated to time period in next equation.

Firt question:
SUFFIX : choice sec=>Second,min=>Minute,hou=>Hour
2nd question
NUMBER : Numeric

Equation : If you want seconds : sum(NUMBER*(SUFFIX=="sec"),NUMBER*60*(SUFFIX=="min"),NUMBER*60*60*(SUFFIX=="hou")

Denis

Firt question:
SUFFIX : choice sec=>Second,min=>Minute,hou=>Hour

how to set 3 suffix in 1 question and partcipant can select which suffix to use?

Single choice selector.