Answer:
Bob’s ad will appear if search terms contain at least all three of the keywords or variations of those terms.
Step-by-step explanation:
Bob’s ad will appear if search terms contain at least all three of the keywords or variations of those terms.: Adding a + sign in front of a keyword turns it into a broad match modifier. This prompts your ads to appear only if the keyword or its close variations are in any part of the search terms.
If Bob uses the broad match modifier keywords “television,” “accessible,” and “voice.” His ads will appear for people searching for any combination of these terms in a search (and possibly including additional terms). However, the ads won’t appear if any one of these keywords aren’t in the search term.