This is not a pitch for Udacity’s scholarship promotion,  goes one of their questions in the application form:
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Q) What is your age? 
*Please note: this scholarship opportunity is only available to applicants 18 years of age or older.[ ]  18-24
[ ]  25-34
[ ]  35-44
[ ]  45-54
[ ]  55-64 
[ ]  65 and older-------------------------------
The above question with graduated age categories allows the 
evaluator to isolate age range of applicants. 
It opens the door to potential discrimination, for example ageism.Why are these age categories relevant to this scholar program when stated minimum age is 18 years old (See asterisk accompanying the question above)?Should Udacity asked if applicant is 18 or older, instead of having applicant choose an age category so as to avoid, at the very least, appearance of age discrimination?In other areas, e.g. in job applications, I noticed similar tactics of asking for a job applicant's year of education graduation as a possible means to infer age of application.Do you think these are avenues for subtle discrimination? 
What does our US laws allow in these area?Thank you for your comments.