"When you are late and don't call to tell me you are going to be late, I am frustrated because I want to have dinner warm and ready when you arrive" is an example of what suggested emotional expression?

We enter relationships with an idea about rewards and costs based on our experiences in past relationships and on relationships we have observed. These expectations are called

a. the comparison level of alternatives. b. the social penetration theory. c. the comparison level d. hyperpersonal communication. e. maintenance skills.

The Google search engine makes money by selling advertisements and ________

Fill in the blank(s) with correct word