After SPIN! - If Richard Burr resigns, who would choose his replacement?

After SPIN! "Question to John Hood and Chris Fitzsimon – Senator Richard Burr has been involved in a controversy of the same of securities he sold just before the COVID-19 virus became so serious. Reports show he received millions of dollars from his sale and there have been some, mostly Democrats, calling for him to resign from the Senate. One viewer asked us who would make the appointment to fill his seat, what would the process be and who might likely be chosen. What say you?"