A newly joined network administrator wants to assess the organization against possible risk. He notices the organization doesn't have a________identified which helps measure how risky an activity is.

Michelle is a network security administrator working at a multinational company. She wants to provide secure access to corporate data (documents, spreadsheets, email, schedules, presentations, and other enterprise data) on mobile devices across organizations networks without being slowed down and also wants to enable easy and secure sharing of information between devices within an enterprise. Based on the above mentioned requirements, which among the following solution should Michelle implement?