Miranda Is a Mid-Level Supervisor at a Home Improvement Store

Miranda is a mid-level supervisor at a home improvement store. Over the last few weeks, Miranda has noticed that Lauren has not been doing well at his job and the sales in his area have been slipping. Which method of communication would be best for Miranda to use to address this matter with Lauren?

A) e-mail
B) memo
C) phone call
D) informal meeting
E) formal meeting