For Mac OS users, there is a system setting that may not allow you to tab onto several types of elements in a web page. To change this setting:
https://docs.google.com/forms/d/e/1FAIpQLSc9yzVoPSRxFxIq5reFwHDrkRU79LeRjF1NZfg_...
https://docs.google.com/forms/d/e/1FAIpQLSc9yzVoPSRxFxIq5reFwHDrkRU79LeRjF1NZfg_...
https://docs.google.com/forms/d/e/1FAIpQLSc9yzVoPSRxFxIq5reFwHDrkRU79LeRjF1NZfg_...
https://docs.google.com/forms/d/e/1FAIpQLSc9yzVoPSRxFxIq5reFwHDrkRU79LeRjF1NZfg_...
https://docs.google.com/forms/d/e/1FAIpQLSc9yzVoPSRxFxIq5reFwHDrkRU79LeRjF1NZfg_...
https://docs.google.com/forms/d/e/1FAIpQLSc9yzVoPSRxFxIq5reFwHDrkRU79LeRjF1NZfg_...