Someone please answer this

Which of the following is not contained on the slide show toolbar? a. next button b. slide button c. close button d. pen too

Visualizing a game of “tag” to remember the meaning of contagious

Why is it preferable to code web pages in html format? a. to create more lines code b. to apply general formatting rules c. to display properly as search results in all browsers d. to add meaning to the document