You have noticed a lot of variation in security awareness among employees, leaving you vulnerable. In the short term, you lack the resources to significantly increase training time or to apply more oversight by security professionals. How can you most easily help teams focus on security fundamentals? Choose the best response.

a$.$

Start a security champions program

b$.$

Perform capture$-$the$-$flag exercises

c$.$

Apply gamification techniques

d$.$

Institute content reviews