If Priyanka is standing upright holding a helium balloon on a string and she then lies down on her back without letting go of the string, what happens to the position of the balloon?

Provide a very brief response.
The helium balloon will continue to float upward due to it being less dense than the surrounding air. As Priyanka lies down, the balloon, still buoyant, will orient itself above her, seeking the highest point it can reach within the confines of the string's length. If we assume the string remains taut and that Priyanka's position has shifted horizontally, the balloon will adjust its position and will now be floating above her in alignment with the pull of gravity, which remains perpendicular to the ground.