Maria is invited to give a presentation about the planet mercury to the third graders at franklin elementary. when she gives the presentation, she can't get the students to follow her graph. the graph shows the eccentricity of mercury's orbit according to newtonian physics and compares it to the uniformity of the planet's orbit according to einsteinian physics. what is the biggest problem with maria's presentation? a. the use of a visual aid is inappropriate for this topic. b. the choice of topic, mercury, is inappropriate. c. the use of a graph instead of a pie chart is inappropriate. d. the level of depth is inappropriate for the audience.