Riddle 1: i speak without a mouth and hear without ears. i have no body, but i come alive with wind. what am i?

Zach will be using powerpoint in a speech he is giving to the local rotary club. according to your textbook, zach should a. check the equipment and setup of the room in which he will be speaking. b. distribute handouts of his slides for the audience to look at during his speech. c. bring a flash drive with a backup of his slides. d. all of the above. e. a and c only.