Sarah has created a presentation to convince the executives at Sit Happens dog care, a regional chain of full service dog boutiques, to include behavioral training in employee interactions with canine clients. It hits every mark but one: it is difficult to visually distinguish key points from the rest of the slides. As a trusted colleague, which suggestion might you give her to improve her presentation for ease of processing?

A) She should have only sixty lines of text for every slide.
B) She should not keep a margin of white space as a border on every slide.
C) She should use 28-point fonts for titles and 18-point fonts for body text.
D) She should put key ideas in the middle of paragraphs in plain text.
E) She should use dark purple for the background and black for the text.