Why do marketers who spend significant time promoting mass$-$marketing efforts need to be aware of customer relationship management $($CRM$)?$

One$-$size$-$fits$-$all marketing is no longer relevant because consumers want to be treated as the individuals they are.

The time that consumers spend on making purchase decisions have risen in recent times.

Mass$-$media approaches to marketing will rise in importance as technology allows marketers to collect detailed information.

The importance of rewarding individual consumers for their loyalty has declined in the recent years.