Create an HTML file that creates a variable named Testscore. Use a prompt-function dialog box to ask the user to specify a value for the variable. Then, use a series of if-else statements to display the corresponding grade based on the following: 90 to 100: A 80 to 89: B 70 to 79: C 60 to 69: D Below 60: F

Ingrid started speaking about her slide presentation. when she clicked to th"third slide, which had just a picture of an elephant, she forgot what she wassupposed to talk about. what could ingrid do to avoid this situation in thefuture? oa. print handouts for her audience.ob. add presenter's notes to each slide.oc. add a video to each slide.od. save her slide presentation to a flash drive