Gatekeeper technologies are used to$\_\_\_\_\_\_\_\_\_.$

Question $18$Answer

a$.$

help market researchers track the behavior of Internet users

b$.$

allow marketers to use traditional methods for contacting people

c$.$

simplify the process of getting user information using telemarketing

d$.$

protect one's privacy against intrusive marketing practices

e$.$

prevent the introduction of new and creative marketing strategies