The adjective form is 'helpful' if used positively and 'helpless' if used negatively
Out of the options up there, some decisions that are helpful to make before you give an oral presentation is to make note cards. These will help you stay on track and help you if you forget what you were talking about. You do not want to do the other options because those are last minutes changes and you might forget you added them and say what you previously had.
C.) The woman who works at the desk
Answer:
The right belongs to every citizen of this democracy to vote in elections.
