حل check the sentences that stand for being cool

الاجابة الصحيحة:

not worrying about what others think of you.

being friendly and sociable.

Out of the two sentences you provided:

Not worrying about what others think of you is definitely a quality associated with being cool. It suggests confidence and self-assuredness.

Being friendly and sociable can be cool, but it's not the defining characteristic. Someone can be cool and reserved, or cool and outgoing. It depends on the context and how they carry themselves.

Therefore, the correct answer is "not worrying about what others think of you."