Objective: How to search by voice on Google with Chrome

Which of the following solutions is more sound in terms of naive physics reasoning?

Available choices: (a). Navigate to www.google.com. Left click the microphone icon, to the right of the search bar. Speak into your microphone with the search terms.; (b). Navigate to www.google.com. Left click the microphone icon, to the right of the search bar. Speak into your mouse with the search terms.;
(a).