Which visual aid would most a speech about the importance of protecting endangered species?

The visual aid that would be the most helpful on the speech about how important it is to protect the endangered species would be a slideshow display. This would entice the audience especially if with a colorful presentation. Hope this is the right answer and would be of big help.

A Slideshow displaying several images of endangered species

Neurotransmitters are messengers responsible for communication between neurons. they are released from synaptic vesicles and are received by receptors.  the communication is referred to as neurotransmission. the following statement is true about neurotransmitters: a. they're stored in synaptic vesicles in the axon.