While filling the DS-160 form for B2 visa, I came across a question : Have you attended any educational institutions at a secondary level or above?
My mother has completed her graduation during the 1960-1970s but she does not have any proof of the same currently. Will it be a problem during the interview in case the interviewer asks for proof? (if it is mentioned)
Or is it safe to mention 'No' to this question.
Thanks for your help