not sure, might be "impressive"?
Social and political problems such as discrimination, violence, inequality, conflict, insecurity, poverty and environmental damage are just some of the challenges that are creating a human rights crisis across the region
It is give since it is talking about more than one teacher
The correct answer is C. If visual aids are not prepared well or relevant, they can Take away from the presentation.
Explanation
Visual aids are tools used to support a speech or oral intervention to visually express the themes and concepts of the intervention to give a better understanding to the public. These aids are the best way to support oral interventions since several scientific studies indicate that visual communications are synthetic messages that help to convey a message effectively. However, if this tool is not used in a good way it cause an adverse result since it can generate confusion in the public or take away from the presentation. According to the above, the correct answer is C.
