As martha walks into the college library, she sees a friend and whispers "hi" as she passes. her whispering is likely in concordance with the "rules," or expectations, for appropriate behavior in a particular social situation. such expectations are referred to in social psychology as: ) person perception. b) social perception. c) stereotype rules. d) social norms.

The correct answer is letter D

Social norms are prescriptions of behavior. The concept of social norm corresponds to social expectations about what is an appropriate or correct behavior. The interaction between individuals does not follow chance; it is in social norms that the necessary basis for interaction and general human social action is found.

productive most commonly means: achieving or producing a significant amount or result.

explanation:

productive can also mean:

these depend on how the word productive is used. most likely productive will mean   achieving or producing a significant amount or result.