To their younger siblings, older siblings can serve as: a good example.

a bad example.

role models.

All of these choices are
correct.

i would say all of these choices are correct. mainly because yes, younger siblings can look up to their older siblings as role models and a good example. at the same time if their older siblings are not a good person and do things that they're not supposed to do (like breaking the rules and whatnot) then they can lead a bad example to their younger siblings.  

All of the choices are correct.

Explanation:

Older siblings have the choice in which example they are going to set for their younger siblings. The most preferable way an older sibling may help their younger siblings would be to be a positive role model and set a good example by getting good grades, helping them out, and always being there for them. Although this is the best way for an older sibling to be/act they may choose to be a bad influence and set a bad example by being mean, lazy, and disrespectful. An older sibling can be any of these things. It is up to them to figure out what they are going to do though.

I hope this helps! :D

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