MO$04-4\%$: Which job classification criteria is used to group similar types of jobs into a job classification?

Kind of wark performed, level of complexity and supervision swcefived and exercised

Knowledge, skills and abilities needed, opportunity for promotion and the ilind of work performed.

Supervision received and exercised, level of complexity and the hnowledge, stills and ability required. $$ Level of complexity and difficulty, kind of work pertormed and the knowledge, skills and abilies required.