Answer: required

AnswerCrossword Clue
REQUIREDLike some courses
REQUIREDNot an elective course.
REQUIREDDemanded.
REQUIREDNeeded.
REQUIREDNecessary
REQUIREDCompulsory
requiredREQUIRE, to have need of
requiredOfficially compulsory, or otherwise considered essential; indispensable
requiredIn keeping with one's wishes; desired