How can imagery be used in a speech ?
a. to organize ideas
b. to inspire the audience
c. to provide evidence
d. to project confidence

The correct answer is B. to inspire the audience.  

Imagery is a literary device used to describe the sensations from the five senses. The speaker will use imagery to describe a taste, smell, a picture, a sound or any sensation, which will inspire the audience by imagining the sensations.

it's like watching a fable, it's not really about the animals but rather it has a meaning that is understood by us and that is implicit, not explicitly said. implicit ideas are common and are used in almost all works of art, from writing to painting to sculpting.