How foreign folk dance affects our folk dance in present?

How can behavioral science be applied in improving public health? a.by tracking a disease to determine its sourceb.by creating promotions that improve health habitscboth by tracking a disease to determine its source and by creating promotions that improve health habitsd.neither by tracking a disease to determine its source or by creating promotions that improve health habits

When a mother loses her child, she's — highly agitated from strong emotion. a scene is if there's lots of action with little order.

Which major world event was near the birth of the modernist movement