True or false. before allowing an employee to enter an excavation at least four feet deep it must be tested for oxygen deficiency and toxic fumes.

The answer should be A) True because before u let your employee or just customer or even anybody, u always want to check the temperature, air level, oxygen deficiency and toxic fumes so that when that person comes they don't have a stroke or seizure that can cause harm to both that person and to you cause u are going to be sued since u were responsible for that person, and also file losses/charges, taxes as well will be sent to u for not proper customer care.