What is verb ?

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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

Select all that apply. a character sketch may deal with only one character trait must be favorable must begin with a formal outline might include details of physical appearance or conduct

What do the sketches of 9/11 victims in "portraits of grief" achieve?