_____ is the series of decisions advertisers make regarding the selection and use of media, enabling the marketer to optimally and cost-effectively communicate the message to the target audience.

Which of the following is true of longitudinal studies?

A) They measure units from a sample of the population at only one point in time. B) They are often described as "snapshots" of the population. C) They include "sample surveys." D) They are prevalent in marketing research, outnumbering cross-sectional and causal studies. E) They repeatedly measure the same sample units of a population over a period of time.

Service recovery efforts should be fairly rigid to make sure the same recovery is achieved each time

Indicate whether the statement is true or false