The synthesis conversion of an alkyl bromide ($\text{RBr}$) to a Grignard reagent ($\text{RMgBr}$) requires which of the following experimental conditions?

The formation of a Grignard reagent ($\text{RMgBr}$) involves reacting an organohalide with magnesium metal. This reaction must be carried out in completely dry ether because Grignard reagents are highly reactive nucleophiles and strong bases that decompose immediately in the presence of moisture or proton donors like ethanol. Furthermore, an inert atmosphere (like ${\text{N}}_2$) is preferred to prevent undesirable oxidation reactions by atmospheric oxygen (${\text{O}}_2$).