Which two elements are advantages of using a multimedia presentation?
(a)it can reach a large audience.

(b)it can convey only audio messages to the audience

(c)it can convey information in a format that not all viewers can understand.

(d)viewers can have control over the delivery of in

(A) It can reach a large audience.

(D) Viewers can have control over the delivery of in

Explanation:

Multimedia presentations use pictures, animations, sounds, ideas, and texts to transmit a message. The limit of these type of presentations relate to the creativity of it's creator. It is usually created in a computer and loaded in different formats, therefore it can be delivered in several ways, the internet makes it possible to reach almost every corner of the world. In addition, as the information or the presentation is loaded, the viewers can have access to it everytime they want, as long as the author wants it.

We can see that multimedia presentations have a great potential, their limits are more related to the ones the author wants to impose. For example, the information delivered can be meant just for students from a certain university, therefore it can be difficult to acces to it if you are not part of that community.  

answer; (b); the abolitionist movement;