WHAT FORM FOR UNDER 18?

[star15]

My sister is under 18 years old, can she file for naturalization same time with my parents or does she have to wait until my parents gets naturalized or until she become 18 to apply..
if she can file now, what form should she use?

[star15]

My sister is under 18 years old, can she file for naturalization same time with my parents or does she have to wait until my parents gets naturalized or until she become 18 to apply..
if she can file now, what form should she use?