Clara will be using the chat function at certain times in her presentation to allow for questions and answers. She has already planned a brief tutorial at the very beginning of her presentation to show how to use the chat function and let her audience know that she will indicate when it's time to use it$.$ What is the best way to use a visual aid when Clara opens the chat feature during her presentation?

a$.$ Include review or recap slides when activating chat Q&A

b$.$ Do not use a visual aid when using the chat feature

c$.$ Show a screen that indicates how to use the chat feature when it is time to use it

d$.$ Show a timer or an hourglass to indicate the amount of time to send in the chat question