Select the appropriate control activities for each of the following definitions.

$\backslash$table$[[,$Definitions,Control Activities$],[$a$.,$The company should maintain security over assets and accounting records.,$],[$b$.,\backslash$table$[[$Management should periodically determine whether the amounts of physical$],[$assets of the company match the accounting records.$]],],[$c$.,\backslash$table$[[$The company should provide employees with appropriate guidance to ensure$],[$they have the knowledge necessary to carry out their job duties.$]],],[$d$.,\backslash$table$[[$The actual performance of individuals or processes should be checked against$],[$their expected performance.$]],],[$e$.,\backslash$table$[[$Authorizing transactions, recording transactions, and maintaining control of the$],[$related assets should be separated among employees.$]],],[$f$.,\backslash$table$[[$To prevent improper use of the company's resources, only certain employees$],[$are allowed to carry out certain business activities.$]],]]$