S.A Stands for Sine Anno.
C, details that help readers visualize the settings better. A wouldn't work because it doesn't help the setting, B doesn't help the setting either and D would only add more confusion so UT would have to be C by process of elimination.
Explanation:
Silicon is a chemical element with the symbol Si and atomic number 14.
Answer: You sound like a person that cannot deal with complete silence or just a little bit of sound. Almost nobody can so that's why we listen to music which is a great way to fill in that empty space, although it is a great risk because it may lead to zoning out and attention loss. Anyway, what music do you like to listen to?
