This Google Forms feature may not be relevant to everyone but can come in very handy for the right user. If you may have a lot of questions on your form but don't want users to navigate through them all if they are not relevant to that user you may want to employ this feature.
Show Questions Based on Answers
You can set up a survey so that people only see certain sections based on their answers.
Open a form in Google Forms.
At the bottom right, click More (...) > Go to section based on answer. If you want the survey to end based on an answer, you can also choose Submit form.
Choose specific sections to send people to.
Tip: "Go to section based on answer" is only available for Multiple choice and Dropdown question types.
This may be useful if you want to give your user the option to submit multiple sets of data, for instance registration information for multiple event attendees. If you want to collect information about all attendees, the user can continue to another section to input information about another guest; if they are only registering a single guest they can simply submit the form once complete without scrolling through form fields for 2, 3, 4, etc guests.
Skip Sections in your Form
Open a form in Google Forms.
To add a section break, click Add section.
At the bottom of each section, you can choose which section people go to next.