What does the study of signs and communication refer to?

While fragileworks of art might be best preserved in a locked box, museums routinely display such objects. why do museum professionals feel it is important to share these artifacts?

Afilm, like any other artwork, can never be totally understood and appreciated through critical analysis, no matter how complete or astute, although such analysis can open up new levels of meaning and appreciation for the sensitive viewer.

(i think my answer is a, am i correct? ) a pentagonal traffic sign is a sign. a. school crossing b. parking c. wrong way d. yield