How do I hide an answer in a live survey?

For power surveys, you can hide an answer in a live survey with scripting. Please see How do I hide options, grid rows, or columns in a live survey? (Power Surveys) for more information. 

For surveys, you can use masking to hide an answer option in a live survey, and then publish your changes.

Detailed Steps

1. Click the question in the Table of Contents to open its Edit Pane.
2. In the Answers area, click Options and select Mask Answers.
3. Leave the source part of the masking condition blank.
4. Select Hide, and select the answers you want to hide.
5. Click Save. 
6. On the survey toolbar, click Publish to make your changes live.

More Information

Read this WebHelp article to learn more about Masking.