10) Identify the structure of each sentence with the following options: a)compound
b)compound complex
c)simple
d)complex

1)Students should volunteer to help others who are less fortunate than they.
2)Teenagers can volunteer by assisting the elderly in nursing home.
3)Children who do not have stable homes needs positive role models, and teenagers can make a difference in these children's lives by spending time with them.
4)Volunteering helps teenagers to understand other people's challenges and difficulties, and it makes them more aware of the needs of those around them.