Is this self advertising because its not a question so i have no answer for you and if i missed something on the website that was a question let me know
C. is the answer to that question
Abstraction comes from two latin words; abs which means away and trahere which mean to draw. From the meaning itself, it is to draw away something from specific objects, individuals, group, etc. In the computer world, a programmer hides all relevant data pertaining to the relevance of a data. It is done to increase efficiency and and reduce complexity.
Just select the fraction text and choose Open Type > Fractions from the Character panel menu.