The largest percentage of 2006 volunteers reported that they did their volunteer work for 
 a. educational facilities. 
 b. the elderly. 
 c. arts-related organizations. 
 d. religious organizations. user: the career clusters can be defined as 
 a. all the jobs a person has in their working life. 
 b. groupings of occupations and broad industries based on commonalities. 
 c. all the tasks a worker has at a single job. 
 d. all the undergraduate majors at a typical university.