Human immunodeficiency virus is believed to have originated from

Select three examples of self-harming behavior.da. burning skin with heated objectsb. eating healthy foodsoc. cutting or sticking skin with sharp objectod. bruising yourself with a heavy object

Can someone give me a hand with this one.

Asubstitute is standing at the halfway line waiting to enter the match at the next stoppage of play the ball has gone over the touchline for throwing and referee allows for the substitution to substitute wants to take the throw-in does the substitute first have to enter the field of play before being allowed to take the throw-in