Oscar is doing research for a report on workplace safety at construction sites. To conduct his research, he’s using keywords on the website of the Occupational Safety and Health Administration (OSHA). Which keywords will help him find information that’s relevant to his topic?

To find information on assistance that OSHA gives to small businesses, Oscar should use the keywords 1..
To expand his search to include OSHA regulations about demolition and fall prevention, he should use the keywords 2..

For number 1:
A.) small + business assistance
B.) "small business" "assistance"
C.) small business -assistance

For number 2:
A.) "demotions regulations" MINUS "fall prevention regulations"
B.) "demotion regulations" OR "fall prevention regulations"
C.) "demotions regulations" NOT "fall prevention regulations"