What does the term "mask" refer to in the context of expressions?

The term "mask" in the context of expressions primarily refers to the idea of concealing one's true emotions or intentions. When someone 'masks' their feelings, they are often putting on a facade or a covering to hide what they are truly experiencing from others. This usage captures the notion that a mask can serve as a barrier, preventing people from seeing the reality behind a person's emotional state.

In contrast, revealing emotions indicates openness and transparency, which runs contrary to the idea of wearing a mask. Creating a public persona suggests a deliberate construction of an identity that may or may not reflect one's true self, which also differs from the primary connotation of masking. Finally, changing one's appearance could relate to physical changes rather than the psychological or emotional implications associated with disguising one’s feelings. Thus, the choice of 'hide something from view' aligns most closely with the meaning of 'mask' in this context.