Nadia$$s cleaning business is finally rebuilding after the province$-$wide lockdown imposed to help stop the spread of the coronavirus. She is confident that she can get to pre$-$COVID$-19$ levels by creating positive word$-$of$-$mouth. Which type of marketing should she use to attract, develop, and retain customers?

a$.$ patronage marketing

b$.$ relationship marketing

c$.$ interactive marketing

d$.$ affiliation marketing