Step-by-step explanation:
definitely price offs..
example; ordering fresh food online; Usually, they will give you ( order 3 , next one free)...
this means; sign up 4 service, pay full price 4 3 meals get a meal free..
busy ppl. sign up 4 this; because time is limited 4 2 parents working full time. Helpful, since family time is important with child upbringing..