1-C. However, if you are aiming to be trusted by the general public, it is important to show that you are impartial.However, if you are aiming to be trusted by the general public, it is important to show that you are impartial.
2-C. Results like these suggest that research assisted by amateurs can be trusted when scientists organize it.Results like these suggest that research assisted by amateurs can be trusted when scientists organize it.