Complex sentence: In a discussion, when one stands or sits with folded arms, this is normally not a welcoming gesture and it could mean that he/she has a closed mind and is most likely unwilling to listen to the speaker's viewpoint.
Split into simpler sentences: In a discussion, when one stands or sits with folded arms, this is normally not a welcoming gesture. It could mean that he/she has a closed mind and is most likely unwilling to listen to the speaker's viewpoint.