Answer: options A and B.
Option A, make the aid available for the audience to look at throughout the speech.
Option B, prepare to give your presentation without the aids, incase problem arises.
Step-by-step explanation:
Presentation aids, sometimes also called sensory aids, are the resources beyond the speech itself that a speaker uses to enhance the message conveyed to the audience.
The type of presentation aids that speakers mostly make use of are visual aids; pictures, diagrams, charts and graphs, maps... Audible aids (musical excerpt, sound effects) and olfactory aids (fragrance samples or food samples) are also used.
* Presentation aids can be used throughout the speech but it should be used for essential points so as to to tire or bore the audience.
* Ensure presentation still works without the presentation aids in case of technical problems or if any problem arises at all.
* While explaining the aids, focus should be on the audience and not the presentation aids itself.
* Practice should be done with the presentation aids in advance so as to avoid any error while presenting.
Therefore, options A, B should be done when using presentation aids.