What does "framing" mean?

a$.$ The purpose of framing is to focus attention on a particular piece of a problem.

b$.$ Framing is a powerful tool that both reduces and highlights an area of focus.

c$.$ Framing is the process of defining the context or issues that surround a problem or event in a way that serves to influence how the context or issues are seen ar evaluated.

d$.$ Both B and C$.$

e$.$ All of the above.