Currently, it isn't possible to complete the "become a mentor" onboarding flow using keyboard-only navigation, which makes this inaccessible to someone who is unable to use a mouse. Specifically, users who are signing up to be mentors are trapped within some of the required dropdowns (e.g. for selecting their location) if they are navigating with the up arrow, down arrow, enter, and tab keys. Expected accessible behavior within dropdowns is to use the up and down arrow keys to find a selection, hit enter to confirm selection of a specific option within the dropdown, then use the tab key to navigate to the next part of the onboarding flow.